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Islamic New Year 1449 AH

Organizer: Lunar Calendar
Worldwide
New Year 1 Muharram (1st day) to begin at sunset on Jun 6; if young New Moon is not visible ...

International Moon Day (Annual)

Organizer: Moon Village Association (MVA)
Global / Inter-Global
Celebrating the 1st people walking on the Moon / another celestial body – International Moon Day has been a recognized ...

Viking 1 Mars Lander 51st Landing Observation Anniversary

Organizer: National Aeronautics and Space Administration (NASA)
Nationwide USA
First USA spacecraft to successfully land on another planet commemorated today for its accomplishment 51 years ago; originally scheduled for ...

Apollo 11, 58th Observation

Organizer: National Aeronautics and Space Administration (NASA)
Global / Inter-Global
First Human mission to land on Moon in 1969; 1st steps by humans on another World taken by Commander Neil ...

IAUGA2027: IAU General Assembly

Organizer: International Astronomical Union (IAU)
Rome, Italy
International Astronomical Union will post a dedicated website "soon". The General Assembly is held every 3 years for astronomers worldwide ...

Parker Solar Probe Marks Another Year in Space

Organizer: National Aeronautics and Space Administration (NASA)
Heliocentric Orbit
NASA craft surpasses another full year in space today, having launched Aug 12, 2018; probe came within ~6.16M km of ...

Lucy Mission Flyby of 3548 Eurybates / Queta

Organizer: National Aeronautics and Space Administration (NASA)
Jupiter Greek camp at Lagrangian point L4
NASA mission to encounter 11 asteroids including a main belt and 7 Jupiter Trojans to come within 1,000 km of ...

41st Annual Small Satellite Conference

Organizer: Small Satellite Conference, others
Salt Palace Convention Center, Salt Lake City UT, USA 100 South West Temple, Salt Lake City, UT, United States
$1000

Chandrayaan-2 Marks Another Year in Lunar Orbit

Organizer: Indian Space Research Organisation (ISRO)
Moon Orbit
India orbiter surpasses another full year in lunar polar orbit since reaching the Moon in 2019; Chandrayaan-2 lander and rover ...

Chandrayaan-3 Commemorated for Moon Landing (2023)

Organizer: Indian Space Research Organisation (ISRO)
Statio Shiv Shakti, 69.373°S 32.319°E, Moon Surface
Chandrayaan-3 Vikram lander and Pragyan rover celebrated today after successfully landing on Moon in 2023; marking India as the 4th ...

Van Allen Probes Mark Another Year in Space

Organizer: National Aeronautics and Space Administration (NASA)
Low Earth Orbit (LEO)
NASA spacecraft surpasses another full year in space today, launched 2012; adding to the understanding of Earth radiation belt environment ...

Lucy Mission Flyby of 15094 Polymele

Organizer: National Aeronautics and Space Administration (NASA)
Jupiter Greek camp at Lagrangian point L4
NASA mission to encounter 11 asteroids including a main belt and 7 Jupiter Trojans to come within 415 km of ...

Astrosat Marks Another Year in Space

Organizer: Indian Space Research Organisation (ISRO)
Low Earth Orbit (LEO)
Indian Space Research Organisation (ISRO) first dedicated multi-wavelength space observatory surpasses another full year in space today, launched 2015.

World Space Week

Organizer: World Space Week Association
Worldwide
Celebrating international contributions of space science for betterment of the human condition; Oct 4 is 68th observation of 1st Space ...

Lucy Mission Reaches 6 Full Years in Space

Organizer: National Aeronautics and Space Administration (NASA)
Jupiter Greek camp at Lagrangian point L4
NASA craft reaches 6 full years in Space, about mid-way through planned 12-year mission to encounter 11 different asteroids.

ExoMars 2016 Orbiter Marks Another Year in Mars Orbit

Organizer: European Space Agency (ESA), Roscosmos State Corporation
Mars Orbit
European Space Agency (ESA) and Roscosmos spacecraft surpasses another full year at Mars, launched 2016; craft continues collecting data on ...

Mars Odyssey Marks Another Year in Mars Orbit

Organizer: National Aeronautics and Space Administration (NASA)
Mars Orbit
NASA spacecraft surpasses another full year in orbit around Mars today, holds record for longest-surviving continually active spacecraft in orbit ...

Swift Spacecraft Marks Another Year in Space

Organizer: National Aeronautics and Space Administration (NASA)
Low Earth Orbit (LEO)
Observing gamma-ray bursts & their afterglows in gamma-ray, X-ray, ultraviolet, optical wavelengths from LEO, multiwavelength craft surpasses another year of ...

Chang’E-5 Marks Another Year on Moon

Organizer: China National Space Administration (CNSA)
Statio Tianchuan, 43° N 51.9° W, Moon Surface
China National Space Administration (CNSA) Chang'E-5 lander at Statio Tianchuan "ship sailing in the Milky Way", Mons Rümker, Oceanus Procellarum, ...

NET Dec — Hayabusa 2, First Earth Flyby

Organizer: Japan Aerospace Exploration Agency (JAXA)
Earth Trajectory
☆ NET Dec — JAXA Hayabusa 2 mission to perform first flyby Earth today on way to rendezvous with asteroid ...

Hayabusa 2 Marks Another Year in Space

Organizer: Japan Aerospace Exploration Agency (JAXA)
Asteroid 98943 Torifune Trajectory
Japan Aerospace Exploration Agency (JAXA) Hayabusa surpasses another full year in space today; launched Dec 3, 2014, returned samples to ...

XMM-Newton Marks Another Year in Space

Organizer: European Space Agency (ESA)
Low Earth Orbit (LEO)
European Space Agency (ESA) craft in Very Eccentric Elliptical LEO studying X-ray emissions, star-forming regions, galaxy clusters, environment of supermassive black ...

AGU 2027 Annual Meeting

Organizer: American Geophysical Union (AGU)
Washington DC, USA
Save the date for future Annual Meetings: December 13-17, 2027 | Washington, D.C. December 11-15, 2028 | San Diego

Chang’E-3 Lander Marks Another Year on Moon

Organizer: China National Space Administration (CNSA)
Guang Han Gong, 44.12°N 19.51°W, Moon Surface
China National Space Administration (CNSA) spacecraft at Guang Han Gong "Moon Palace", Sinus Iridum / Mare Imbrium, 44.12°N 19.51°W, surpasses ...

WISE / NEOWISE Marks Another Year in Space

Organizer: National Aeronautics and Space Administration (NASA)
Low Earth Orbit (LEO)
NASA Wide-field Infrared Survey Explorer spacecraft (redubbed Near-Earth Object WISE – NEOWISE) surpasses another full year in space today; launched ...

Gaia Spacecraft Marks Another Year in Space

Organizer: European Space Agency (ESA)
Sun-Earth L2 Lagrange point
ESA spacecraft surpasses another full year in space today; now in extended mission phase working to map more than 1 ...

Mars Express Marks Another Year in Mars Orbit

Organizer: European Space Agency (ESA)
Mars Orbit
ESA spacecraft surpasses next full year in Mars orbit today; will continue to study Mars atmosphere & climate, planet structure, ...

NET 2028 — Launch Tianwen-3 Mars Sample Return Mission

Organizer: China National Space Administration (CNSA)
Wenchang Space Launch Center, Hainan Island, China (19° N)
NET 2028 — China expects to launch Tianwen-3 Mars Sample Return Mission to Mars by this date, to deliver samples ...

NET 2028 — Launch Angara A5 / Luna-27

Organizer: Roscosmos State Corporation
Vostochny Cosmodrome, Russia
NET 2028 — Roscosmos planning to launch Angara A5 with Luna-27 (Luna-Resurs 1) lander to Moon South Pole to target ...

NET 2028 — Launch Long March 10 / Human Moon Flyby

Organizer: China National Space Administration (CNSA)
Wenchang Space Launch Center, Hainan Island, China (19° N)
NET 2028 — Tentative date for China's first crewed lunar flyby using super-heavy lift Long March 10 rocket and crew ...

2028 AIAA SciTech Forum

Organizer: American Institute of Aeronautics and Astronautics (AIAA)
Hyatt Regency Orlando Orlando, FL, United States
AIAA SciTech Forum—the premier aerospace R&D event of the year exploring the science, technologies, and capabilities that are transforming aerospace.

Lunar New Year

Organizer: Lunar Calendar
China (Zhongguo) / Worldwide
Lunar New Year 2028 Spring Festival marks the Year of the Monkey.

Apollo 1, 61st Observation

Organizer: National Aeronautics and Space Administration (NASA)
Nationwide USA
Increasing space awareness and education, remembrances and events honor three Apollo 1 crew members lost in 1967 during a launch ...

Challenger STS-51L, 42nd Observation

Organizer: National Aeronautics and Space Administration (NASA)
Nationwide USA
Educational and ceremonial events held worldwide to advance space technology / education and honor 7 crew members killed in Shuttle ...

Explorer 1, 70th Observation

Organizer: National Aeronautics and Space Administration (NASA)
Nationwide USA
American Artemis Return to the Moon For Good is underway, Mars attention and planning advancing, Outer Solar System search for ...

Columbia STS-107, 25th Observation

Organizer: National Aeronautics and Space Administration (NASA)
Nationwide USA
Annual international conferences and events take place to further space exploration efforts in remembrance of Columbia 7 loss in 2003: ...

Launch Vehicle Mark-3 (LVM3) / Shukrayaan-1 Mission

Organizer: Indian Space Research Organisation (ISRO)
Satish Dhawan Space Center, Sriharikota, India
India planning to launch its first mission, Shukrayaan-1, to Venus to study the surface and atmosphere of Venus; planned to ...

Pōwehi Day

Organizer: Hawai'i, USA
Statewide Hawai’i, USA
Recognized proclamation to celebrate the first-ever imaged black hole M87* by Event Horizon Telescope collaboration involving Mauna Kea Observatories, given the Hawaiian ...

Yuri’s Night Celebrations

Organizer: Yuri's Night
Worldwide
Launching parties around the world every year on or around April 12th, in commemoration of Yuri Gagarin becoming the first ...

Lucy Spacecraft to Fly By Asteroid 11351 Leucus

Organizer: National Aeronautics and Space Administration (NASA)
Jupiter Greek camp at Lagrangian point L4
NASA's Lucy mission, to encounter 11 asteroids including a main belt and 7 Jupiter Trojans, planned to come within 1,000 ...

Hubble Space Telescope Marks Another Year in Space

Organizer: National Aeronautics and Space Administration (NASA)
Low Earth Orbit (LEO)
NASA spacecraft with 2.4-meter diameter main telescope begins 39th year in space today, launched Apr 24, 1990; could continue operations ...

National Day of Space Flight

Organizer: China National Space Administration (CNSA)
China (Zhongguo)
Commemorating the launch of China’s first satellite, Dongfanghong-1 on April 24, 1970.

International Space Day

Organizer: International Space Day
Worldwide
First Friday in May, events and presentations to promote STEM education and inspire people to continue the work of Space ...

John F. Kennedy 1st Moon Speech

Organizer: USA Congress
Nationwide USA
NASA Artemis program to land 1st Woman and Person of Color on Moon is well underway as today is recognized ...

NET Jun — Hayabusa 2, Second Earth Flyby

Organizer: Japan Aerospace Exploration Agency (JAXA)
Earth Trajectory
☆ NET Jun — JAXA Hayabusa 2 mission to perform second flyby Earth today on way to rendezvous with asteroid ...

252nd Meeting of the AAS

Organizer: American Astronomical Society (AAS)
Madison WI, USA
At Monona Terrace.

NET Q3 2028 — Launch Long March 5 / Chang’E-8

Organizer: China National Space Administration (CNSA)
Wenchang Space Launch Center, Hainan Island, China (19° N)
NET Q3 2028 — Chang'E-8 planned to land at Moon South Pole with 10 international projects to conduct in-situ resource ...

International Moon Day (Annual)

Organizer: Moon Village Association (MVA)
Global / Inter-Global
Celebrating the 1st people walking on the Moon / another celestial body – International Moon Day has been a recognized ...

Viking 1 Mars Lander 52nd Landing Observation Anniversary

Organizer: National Aeronautics and Space Administration (NASA)
Nationwide USA
First USA spacecraft to successfully land on another planet commemorated today for its accomplishment 52 years ago; originally scheduled for ...

Apollo 11, 59th Observation

Organizer: National Aeronautics and Space Administration (NASA)
Global / Inter-Global
First Human mission to land on Moon in 1969; 1st steps by humans on another World taken by Commander Neil ...

Parker Solar Probe Marks Another Year in Space

Organizer: National Aeronautics and Space Administration (NASA)
Heliocentric Orbit
NASA craft surpasses another full year in space today, having launched Aug 12, 2018; probe came within ~6.16M km of ...

42nd Annual Small Satellite Conference

Organizer: Small Satellite Conference, others
Salt Palace Convention Center, Salt Lake City UT, USA 100 South West Temple, Salt Lake City, UT, United States
$1000

Chandrayaan-3 Commemorated for Moon Landing (2023)

Organizer: Indian Space Research Organisation (ISRO)
Statio Shiv Shakti, 69.373°S 32.319°E, Moon Surface
Chandrayaan-3 Vikram lander and Pragyan rover celebrated today after successfully landing on Moon in 2023; marking India as the 4th ...

Van Allen Probes Mark Another Year in Space

Organizer: National Aeronautics and Space Administration (NASA)
Low Earth Orbit (LEO)
NASA spacecraft surpasses another full year in space today, launched 2012; adding to the understanding of Earth radiation belt environment ...

Astrosat Marks Another Year in Space

Organizer: Indian Space Research Organisation (ISRO)
Low Earth Orbit (LEO)
Indian Space Research Organisation (ISRO) first dedicated multi-wavelength space observatory surpasses another full year in space today, launched 2015.

World Space Week

Organizer: World Space Week Association
Worldwide
Celebrating international contributions of space science for betterment of the human condition; Oct 4 is 68th observation of 1st Space ...

ExoMars 2016 Orbiter Marks Another Year in Mars Orbit

Organizer: European Space Agency (ESA), Roscosmos State Corporation
Mars Orbit
European Space Agency (ESA) and Roscosmos spacecraft surpasses another full year at Mars, launched 2016; craft continues collecting data on ...

Mars Odyssey Marks Another Year in Mars Orbit

Organizer: National Aeronautics and Space Administration (NASA)
Mars Orbit
NASA spacecraft surpasses another full year in orbit around Mars today, holds record for longest-surviving continually active spacecraft in orbit ...

Lucy Spacecraft to Fly by Asteroid 21900 Orus

Organizer: National Aeronautics and Space Administration (NASA)
Jupiter Greek camp at Lagrangian point L4
NASA Lucy mission, to encounter 11 asteroids including a main belt and 7 Jupiter Trojans, to come within 1,000 km ...

Swift Spacecraft Marks Another Year in Space

Organizer: National Aeronautics and Space Administration (NASA)
Low Earth Orbit (LEO)
Observing gamma-ray bursts & their afterglows in gamma-ray, X-ray, ultraviolet, optical wavelengths from LEO, multiwavelength craft surpasses another year of ...

242nd Galactic Tick Day

Organizer: Milky Way Galaxy
☆ Nov 24 — 242nd Galactic Tick Day, Milky Way Galaxy: Highlighting Galaxy awareness by celebrating the Solar System traveling around Milky ...

Chang’E-5 Marks Another Year on Moon

Organizer: China National Space Administration (CNSA)
Statio Tianchuan, 43° N 51.9° W, Moon Surface
China National Space Administration (CNSA) Chang'E-5 lander at Statio Tianchuan "ship sailing in the Milky Way", Mons Rümker, Oceanus Procellarum, ...

Hayabusa 2 Marks Another Year in Space

Organizer: Japan Aerospace Exploration Agency (JAXA)
Asteroid 98943 Torifune Trajectory
Japan Aerospace Exploration Agency (JAXA) Hayabusa surpasses another full year in space today; launched Dec 3, 2014, returned samples to ...

XMM-Newton Marks Another Year in Space

Organizer: European Space Agency (ESA)
Low Earth Orbit (LEO)
European Space Agency (ESA) craft in Very Eccentric Elliptical LEO studying X-ray emissions, star-forming regions, galaxy clusters, environment of supermassive black ...

AGU 2028 Annual Meeting

Organizer: American Geophysical Union (AGU)
San Diego CA, USA
Save the date for future Annual Meetings: December 11-15, 2028 | San Diego

Chang’E-3 Lander Marks Another Year on Moon

Organizer: China National Space Administration (CNSA)
Guang Han Gong, 44.12°N 19.51°W, Moon Surface
China National Space Administration (CNSA) spacecraft at Guang Han Gong "Moon Palace", Sinus Iridum / Mare Imbrium, 44.12°N 19.51°W, surpasses ...

WISE / NEOWISE Marks Another Year in Space

Organizer: National Aeronautics and Space Administration (NASA)
Low Earth Orbit (LEO)
NASA Wide-field Infrared Survey Explorer spacecraft (redubbed Near-Earth Object WISE – NEOWISE) surpasses another full year in space today; launched ...

Gaia Spacecraft Marks Another Year in Space

Organizer: European Space Agency (ESA)
Sun-Earth L2 Lagrange point
ESA spacecraft surpasses another full year in space today; now in extended mission phase working to map more than 1 ...

James Webb Space Telescope Marks Another Year in Space

Organizer: National Aeronautics and Space Administration (NASA), European Space Agency (ESA), Canadian Space Agency (CSA-ASC)
Sun-Earth L2 Lagrange point
NASA (STSci) / ESA / CSA-ASC infrared astronomy telescope surpasses next full year in space since launching on this day ...

Mars Express Marks Another Year in Mars Orbit

Organizer: European Space Agency (ESA)
Mars Orbit
ESA spacecraft surpasses next full year in Mars orbit today; will continue to study Mars atmosphere & climate, planet structure, ...

NET 2029 — Launch Soorya / Human Moon Mission

Organizer: Indian Space Research Organisation (ISRO)
Satish Dhawan Space Center, Sriharikota, India
NET 2029 — Potential date for India 1st crewed mission to cislunar space with using Soorya rocket.

NET 2029 — Launch Luna-28

Organizer: Roscosmos State Corporation
Vostochny Cosmodrome, Russia
NET 2029 — Roscosmos hoping to launch Launch Luna-28 (Luna-Resurs 2) to the Moon South Pole region for sample return ...

NET 2029 — Launch Tianwen-3 to Jupiter

Organizer: China National Space Administration (CNSA)
Wenchang Space Launch Center, Hainan Island, China (19° N)
NET 2029 — China planning to launch its first probe to Jupiter this year with the Tianwen-3.

NET 2029 — End of Euclid Nominal Mission

Organizer: European Space Agency (ESA)
Sun-Earth L2 Lagrange point
NET 2029 — Scheduled end of European Space Agency Euclid mission which is measuring accelerated expansion of Universe, aiding in ...

NET 2029 — Launch Long March 10 / Human Moon Landing

Organizer: China National Space Administration (CNSA)
Wenchang Space Launch Center, Hainan Island, China (19° N)
NET 2029 — Tentative date for China's crewed spaceflight program to have first of its multiple human Moon missions to ...

Apollo 1, 62nd Observation

Organizer: National Aeronautics and Space Administration (NASA)
Nationwide USA
Increasing space awareness and education, remembrances and events honor three Apollo 1 crew members lost in 1967 during a launch ...

Challenger STS-51L, 43rd Observation

Organizer: National Aeronautics and Space Administration (NASA)
Nationwide USA
Educational and ceremonial events held worldwide to advance space technology / education and honor 7 crew members killed in Shuttle ...

Columbia STS-107, 26th Observation

Organizer: National Aeronautics and Space Administration (NASA)
Nationwide USA
Annual international conferences and events take place to further space exploration efforts in remembrance of Columbia 7 loss in 2003: ...

Lunar New Year

Organizer: Lunar Calendar
China (Zhongguo) / Worldwide
Lunar New Year 2029 Spring Festival marks the Year of the Rooster.

Pōwehi Day

Organizer: Hawai'i, USA
Statewide Hawai’i, USA
Recognized proclamation to celebrate the first-ever imaged black hole M87* by Event Horizon Telescope collaboration involving Mauna Kea Observatories, given the Hawaiian ...

Yuri’s Night Celebrations

Organizer: Yuri's Night
Worldwide
Launching parties around the world every year on or around April 12th, in commemoration of Yuri Gagarin becoming the first ...

Asteroid 99942 Apophis to Fly by Earth

Organizer: Asteroid 99942 Apophis
Medium Earth Orbit (MEO)
On this day, which happens to be a Friday, 370-meter diameter asteroid (previously known as 2004 MN4) will narrowly miss ...

OSIRIS-APEX to Rendezvous with Asteroid 99942 Apophis

Organizer: National Aeronautics and Space Administration (NASA)
Asteroid 99942 Apophis Orbit
OSIRIS-APophis EXplorer (OSIRIS-APEX) is planned rendezvous with and orbit asteroid Apophis starting today for 9 months following the asteroid’s close ...

National Day of Space Flight

Organizer: China National Space Administration (CNSA)
China (Zhongguo)
Commemorating the launch of China’s first satellite, Dongfanghong-1 on April 24, 1970.

International Space Day

Organizer: International Space Day
Worldwide
First Friday in May, events and presentations to promote STEM education and inspire people to continue the work of Space ...

International Moon Day (Annual)

Organizer: Moon Village Association (MVA)
Global / Inter-Global
Celebrating the 1st people walking on the Moon / another celestial body – International Moon Day has been a recognized ...

Viking 1 Mars Lander 53rd Landing Observation Anniversary

Organizer: National Aeronautics and Space Administration (NASA)
Nationwide USA
First USA spacecraft to successfully land on another planet commemorated today for its accomplishment 53 years ago; originally scheduled for ...

Apollo 11, 60th Observation

Organizer: National Aeronautics and Space Administration (NASA)
Global / Inter-Global
First Human mission to land on Moon in 1969; 1st steps by humans on another World taken by Commander Neil ...

Parker Solar Probe Marks Another Year in Space

Organizer: National Aeronautics and Space Administration (NASA)
Heliocentric Orbit
NASA craft surpasses another full year in space today, having launched Aug 12, 2018; probe came within ~6.16M km of ...

43rd Annual Small Satellite Conference

Organizer: Small Satellite Conference, others
Salt Palace Convention Center, Salt Lake City UT, USA 100 South West Temple, Salt Lake City, UT, United States
$1000

Chandrayaan-3 Commemorated for Moon Landing (2023)

Organizer: Indian Space Research Organisation (ISRO)
Statio Shiv Shakti, 69.373°S 32.319°E, Moon Surface
Chandrayaan-3 Vikram lander and Pragyan rover celebrated today after successfully landing on Moon in 2023; marking India as the 4th ...

Van Allen Probes Mark Another Year in Space

Organizer: National Aeronautics and Space Administration (NASA)
Low Earth Orbit (LEO)
NASA spacecraft surpasses another full year in space today, launched 2012; adding to the understanding of Earth radiation belt environment ...

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