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Yuri's Night
Worldwide

Yuri’s Night Celebrations

Launching parties around the world every year on or around April 12th, in commemoration of Yuri Gagarin becoming the first ...
American Society of Civil Engineers (ASCE), Texas A&M University
College Station TX, USA

ASCE Earth & Space 2026 Conference

20th International Conference on Engineering, Science, Construction and Operations in Challenging Environments: ASCE Earth & Space 2026
Comet C/1861 G1 (Thatcher)
Worldwide

Lyrids Meteor Shower Peak

Best seen from Northern Hemisphere, with a lower hourly rate in the Southern Hemisphere, Lyrids seem to stream from the ...
National Aeronautics and Space Administration (NASA)
Low Earth Orbit (LEO)

Hubble Space Telescope Marks Another Year in Space

NASA spacecraft with 2.4-meter diameter main telescope begins 37th year in space today, launched Apr 24, 1990; could continue operations ...
China National Space Administration (CNSA)
China (Zhongguo)

National Day of Space Flight

Commemorating the launch of China’s first satellite, Dongfanghong-1 on April 24, 1970.

International Space Day
Worldwide

International Space Day

First Friday in May, events and presentations to promote STEM education and inspire people to continue the work of Space ...
International Astronomical Union (IAU)
Hong Kong, China

Asia-Pacific Regional IAU Meeting (APRIM 2026)

The Asia Pacific Regional International Astronomical Union (IAU) Meeting is a highly anticipated gathering that convenes astronomers, researchers, and enthusiasts ...
American Institute of Aeronautics and Astronautics (AIAA), Commercial Space Federation (CSF), Space Force Association, Space Generation Advisory Council (SGAC), Lockheed Martin, ISS National Laboratory
Washington DC, USA

2026 ASCEND Conference

Accelerating Space Commerce, Exploration, and New Discovery
USA Congress
Nationwide USA

John F. Kennedy 1st Moon Speech

NASA Artemis program to land 1st Woman and Person of Color on Moon is well underway as today is recognized ...
von Karman Institute for Fluid Dynamics
Brussels, Belgium

32nd AIAA / CEAS Aeroacoustics Conference 2026

Organized by the von Karman Institute for Fluid Dynamics, the 32nd AIAA/CEAS Aeroacoustics Conference (Aeroacoustics 2026) is the premier international ...
€475

South African Radio Astronomy Observatory (SARAO), ZA Space, GMN Fairs, Hauweng, Advanced Business Events
Pretoria, South Africa

International Space Summit Africa

Expecting 300 exhibitors, 500 companies, 25 countries, 3,000 B2B (business to business) meetings
Lunar Calendar
Worldwide

Islamic New Year 1448 AH

New Year 1 Muharram (1st day) to begin at sunset on Jun 16; if young New Moon is not visible ...

China National Space Administration (CNSA)
Near-Earth Object (NEO)

Tianwen-2 to Rendezvous with Kamo’oalewa (2016 HO3)

China asteroid sample return mission, to arrive at Kamo’oalewa today to collect at least 100 grams via anchoring-drilling, hover-sampling and ...
Space Age Publishing Company (SPC)
Global / Inter-Global

Space Age Publishing Company (SPC) 50th Observation

Jul 5 — Space Age Publishing Company (SPC), Global / Inter-Global: SPC, publisher of Space Calendar and Lunar Enterprise Daily, observes 50 years since inception and ...
Purdue University
West Lafayette, Indiana

Neil Armstrong Space Prizes to be Awarded

Purdue University will bestow its newest honor – the Neil Armstrong Space Prize – upon those whose contributions to space ...
Moon Village Association (MVA)
Global / Inter-Global

International Moon Day (Annual)

Celebrating the 1st people walking on the Moon / another celestial body – International Moon Day has been a recognized ...
National Aeronautics and Space Administration (NASA)
Global / Inter-Global

Apollo 11, 57th Observation

First Human mission to land on Moon in 1969; 1st steps by humans on another World taken by Commander Neil ...

China National Space Administration (CNSA)
Wenchang Space Launch Center, Hainan Island, China (19° N)

NET Aug — Launch Long March 5 / Chang’E-7

NET Aug — CNSA to launch CE-7 mission which is planned to land at Moon South Pole to survey environment ...
National Aeronautics and Space Administration (NASA)
Heliocentric Orbit

Parker Solar Probe Marks Another Year in Space

NASA craft surpasses another full year in space today, having launched Aug 12, 2018; probe came within ~6.16M km of ...
Indian Space Research Organisation (ISRO)
Moon Orbit

Chandrayaan-2 Marks Another Year in Lunar Orbit

India orbiter surpasses another full year in lunar polar orbit since reaching the Moon in 2019; Chandrayaan-2 lander and rover ...
Indian Space Research Organisation (ISRO)
Statio Shiv Shakti, 69.373°S 32.319°E, Moon Surface

Chandrayaan-3 Commemorated for Moon Landing (2023)

Chandrayaan-3 Vikram lander and Pragyan rover celebrated today after successfully landing on Moon in 2023; marking India as the 4th ...
Small Satellite Conference, others
Salt Palace Convention Center, Salt Lake City UT, USA 100 South West Temple, Salt Lake City, UT, United States

40th Annual Small Satellite Conference

~5,000 attendees expected; student discount on registration fee; winners of student competition receive up to US$10,000
$1000
National Aeronautics and Space Administration (NASA)
Low Earth Orbit (LEO)

Van Allen Probes Mark Another Year in Space

NASA spacecraft surpasses another full year in space today, launched 2012; adding to the understanding of Earth radiation belt environment ...

Indian Space Research Organisation (ISRO)
Low Earth Orbit (LEO)

Astrosat Marks Another Year in Space

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

World Space Week Association
Worldwide

World Space Week

Celebrating international contributions of space science for betterment of the human condition; Oct 4 is 68th observation of 1st Space ...
International Observe the Moon Night Organization
Worldwide

International Observe the Moon Night 2026

For observation, appreciation, understanding of the Moon / its connection to planetary science / exploration; 1st quarter Moon is best ...
National Aeronautics and Space Administration (NASA), Roscosmos State Corporation
Mars Orbit

ExoMars 2016 Orbiter Marks Another Year in Mars Orbit

European Space Agency (ESA) and Roscosmos spacecraft surpasses another full year at Mars, launched 2016; craft continues collecting data on ...
National Aeronautics and Space Administration (NASA)
Mars Orbit

Mars Odyssey Marks Another Year in Mars Orbit

NASA spacecraft surpasses another full year in orbit around Mars today, holds record for longest-surviving continually active spacecraft in orbit ...

China National Space Administration (CNSA)
Shackleton Crater Ridge, Moon Surface

NET Nov — Chang’E-7 to land on Moon

NET Nov — CNSA CE-7 mission planned to land at Shackleton Crater Ridge near Moon South Pole region to survey ...
National Aeronautics and Space Administration (NASA)
Low Earth Orbit (LEO)

Swift Spacecraft Marks Another Year in Space

Observing gamma-ray bursts & their afterglows in gamma-ray, X-ray, ultraviolet, optical wavelengths from LEO, multiwavelength craft surpasses another year of ...

China National Space Administration (CNSA)
Statio Tianchuan, 43° N 51.9° W, Moon Surface

Chang’E-5 Marks Another Year on Moon

China National Space Administration (CNSA) Chang'E-5 lander at Statio Tianchuan "ship sailing in the Milky Way", Mons Rümker, Oceanus Procellarum, ...
Japan Aerospace Exploration Agency (JAXA)
Asteroid 98943 Torifune Trajectory

Hayabusa 2 Marks Another Year in Space

Japan Aerospace Exploration Agency (JAXA) Hayabusa surpasses another full year in space today; launched Dec 3, 2014, returned samples to ...
American Geophysical Union (AGU)
San Francisco CA, USA

AGU 2026 Annual Meeting

Save the date for future Annual Meetings: December 7-11, 2026 | San Francisco December 13-17, 2027 | Washington, D.C. December ...
European Space Agency (ESA)
Low Earth Orbit (LEO)

XMM-Newton Marks Another Year in Space

European Space Agency (ESA) craft in Very Eccentric Elliptical LEO studying X-ray emissions, star-forming regions, galaxy clusters, environment of supermassive black ...
China National Space Administration (CNSA)
Guang Han Gong, 44.12°N 19.51°W, Moon Surface

Chang’E-3 Lander Marks Another Year on Moon

China National Space Administration (CNSA) spacecraft at Guang Han Gong "Moon Palace", Sinus Iridum / Mare Imbrium, 44.12°N 19.51°W, surpasses ...
National Aeronautics and Space Administration (NASA)
Low Earth Orbit (LEO)

WISE / NEOWISE Marks Another Year in Space

NASA Wide-field Infrared Survey Explorer spacecraft (redubbed Near-Earth Object WISE – NEOWISE) surpasses another full year in space today; launched ...
European Space Agency (ESA)
Sun-Earth L2 Lagrange point

Gaia Spacecraft Marks Another Year in Space

ESA spacecraft surpasses another full year in space today; now in extended mission phase working to map more than 1 ...
National Aeronautics and Space Administration (NASA), European Space Agency (ESA), Canadian Space Agency (CSA-ASC)
Sun-Earth L2 Lagrange point

James Webb Space Telescope Marks Another Year in Space

NASA (STSci) / ESA / CSA-ASC infrared astronomy telescope surpasses next full year in space since launching on this day ...
National Aeronautics and Space Administration (NASA)
Mars Orbit

Mars Express Marks Another Year in Mars Orbit

ESA spacecraft surpasses next full year in Mars orbit today; will continue to study Mars atmosphere & climate, planet structure, ...

Roscosmos State Corporation
Vostochny Cosmodrome, Russia

NET 2027 — Launch Luna-26

NET 2027 — Roscosmos State Corporation, Launch Luna-26, Vostochny Cosmodrome, Russia: Roscosmos hopes to launch the Luna-Resurs O (Luna-Resurs Orbiter) to ...
China National Space Administration (CNSA)
Wenchang Space Launch Center, Hainan Island, China (19° N)

NET 2027 — Launch Long March 5 / Xuntian Telescope

NET 2027 — CNSA to launch Long March 5 with Xuntian space telescope from Wenchang Space Launch Center, Hainan Island, ...
American Astronomical Society (AAS)
Salt Palace Convention Center, Salt Lake City UT, USA 100 South West Temple, Salt Lake City, UT, United States

249th Meeting of the AAS

At Salt Palace Convention Center.
American Institute of Aeronautics and Astronautics (AIAA)
Hyatt Regency Orlando Orlando, FL, United States

2027 AIAA SciTech Forum

AIAA SciTech Forum—the premier aerospace R&D event of the year exploring the science, technologies, and capabilities that are transforming aerospace.
National Aeronautics and Space Administration (NASA)
Nationwide USA

Apollo 1, 60th Observation

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

Challenger STS-51L, 41st Observation

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

Explorer 1, 69th Observation

American Artemis Return to the Moon For Good is underway, Mars attention and planning advancing, Outer Solar System search for ...

National Aeronautics and Space Administration (NASA)
Nationwide USA

Columbia STS-107, 24th Observation

Annual international conferences and events take place to further space exploration efforts in remembrance of Columbia 7 loss in 2003: ...
Lunar Calendar
China (Zhongguo) / Worldwide

Lunar New Year

Lunar New Year 2027 Spring Festival marks the Year of the Goat.

Milky Way Galaxy

241st Galactic Tick Day

Highlighting Galaxy awareness by celebrating the Solar System traveling around Milky Way Galaxy Center every ~225 million Earth years, one ...

Hawai'i, USA
Statewide Hawai’i, USA

Pōwehi Day

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
Worldwide

Yuri’s Night Celebrations

Launching parties around the world every year on or around April 12th, in commemoration of Yuri Gagarin becoming the first ...
National Aeronautics and Space Administration (NASA)
Low Earth Orbit (LEO)

Hubble Space Telescope Marks Another Year in Space

NASA spacecraft with 2.4-meter diameter main telescope begins 38th year in space today, launched Apr 24, 1990; could continue operations ...
China National Space Administration (CNSA)
Earth Trajectory

Tianwen-2 Departs Kamo’oalewa (2016 HO3)

China Tianwen-2 asteroid sample return mission planned to depart Kamo’oalewa (2016 HO3) today and return to Earth with least 100 ...
China National Space Administration (CNSA)
China (Zhongguo)

National Day of Space Flight

Commemorating the launch of China’s first satellite, Dongfanghong-1 on April 24, 1970.

International Space Day
Worldwide

International Space Day

First Friday in May, events and presentations to promote STEM education and inspire people to continue the work of Space ...
USA Congress
Nationwide USA

John F. Kennedy 1st Moon Speech

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

Lunar Calendar
Worldwide

Islamic New Year 1449 AH

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

Moon Village Association (MVA)
Global / Inter-Global

International Moon Day (Annual)

Celebrating the 1st people walking on the Moon / another celestial body – International Moon Day has been a recognized ...
National Aeronautics and Space Administration (NASA)
Global / Inter-Global

Apollo 11, 58th Observation

First Human mission to land on Moon in 1969; 1st steps by humans on another World taken by Commander Neil ...

International Astronomical Union (IAU)
Rome, Italy

IAUGA2027: IAU General Assembly

International Astronomical Union will post a dedicated website "soon". The General Assembly is held every 3 years for astronomers worldwide ...
National Aeronautics and Space Administration (NASA)
Heliocentric Orbit

Parker Solar Probe Marks Another Year in Space

NASA craft surpasses another full year in space today, having launched Aug 12, 2018; probe came within ~6.16M km of ...
National Aeronautics and Space Administration (NASA)
Jupiter Greek camp at Lagrangian point L4

Lucy Mission Flyby of 3548 Eurybates / Queta

NASA mission to encounter 11 asteroids including a main belt and 7 Jupiter Trojans to come within 1,000 km of ...
Small Satellite Conference, others
Salt Palace Convention Center, Salt Lake City UT, USA 100 South West Temple, Salt Lake City, UT, United States

41st Annual Small Satellite Conference

$1000
Indian Space Research Organisation (ISRO)
Moon Orbit

Chandrayaan-2 Marks Another Year in Lunar Orbit

India orbiter surpasses another full year in lunar polar orbit since reaching the Moon in 2019; Chandrayaan-2 lander and rover ...
Indian Space Research Organisation (ISRO)
Statio Shiv Shakti, 69.373°S 32.319°E, Moon Surface

Chandrayaan-3 Commemorated for Moon Landing (2023)

Chandrayaan-3 Vikram lander and Pragyan rover celebrated today after successfully landing on Moon in 2023; marking India as the 4th ...
National Aeronautics and Space Administration (NASA)
Low Earth Orbit (LEO)

Van Allen Probes Mark Another Year in Space

NASA spacecraft surpasses another full year in space today, launched 2012; adding to the understanding of Earth radiation belt environment ...

National Aeronautics and Space Administration (NASA)
Jupiter Greek camp at Lagrangian point L4

Lucy Mission Flyby of 15094 Polymele

NASA mission to encounter 11 asteroids including a main belt and 7 Jupiter Trojans to come within 415 km of ...
Indian Space Research Organisation (ISRO)
Low Earth Orbit (LEO)

Astrosat Marks Another Year in Space

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

World Space Week Association
Worldwide

World Space Week

Celebrating international contributions of space science for betterment of the human condition; Oct 4 is 68th observation of 1st Space ...
National Aeronautics and Space Administration (NASA)
Jupiter Greek camp at Lagrangian point L4

Lucy Mission Reaches 6 Full Years in Space

NASA craft reaches 6 full years in Space, about mid-way through planned 12-year mission to encounter 11 different asteroids.
European Space Agency (ESA), Roscosmos State Corporation
Mars Orbit

ExoMars 2016 Orbiter Marks Another Year in Mars Orbit

European Space Agency (ESA) and Roscosmos spacecraft surpasses another full year at Mars, launched 2016; craft continues collecting data on ...
National Aeronautics and Space Administration (NASA)
Mars Orbit

Mars Odyssey Marks Another Year in Mars Orbit

NASA spacecraft surpasses another full year in orbit around Mars today, holds record for longest-surviving continually active spacecraft in orbit ...

National Aeronautics and Space Administration (NASA)
Low Earth Orbit (LEO)

Swift Spacecraft Marks Another Year in Space

Observing gamma-ray bursts & their afterglows in gamma-ray, X-ray, ultraviolet, optical wavelengths from LEO, multiwavelength craft surpasses another year of ...

China National Space Administration (CNSA)
Statio Tianchuan, 43° N 51.9° W, Moon Surface

Chang’E-5 Marks Another Year on Moon

China National Space Administration (CNSA) Chang'E-5 lander at Statio Tianchuan "ship sailing in the Milky Way", Mons Rümker, Oceanus Procellarum, ...
Japan Aerospace Exploration Agency (JAXA)
Earth Trajectory

NET Dec — Hayabusa 2, First Earth Flyby

☆ NET Dec — JAXA Hayabusa 2 mission to perform first flyby Earth today on way to rendezvous with asteroid ...
Japan Aerospace Exploration Agency (JAXA)
Asteroid 98943 Torifune Trajectory

Hayabusa 2 Marks Another Year in Space

Japan Aerospace Exploration Agency (JAXA) Hayabusa surpasses another full year in space today; launched Dec 3, 2014, returned samples to ...
European Space Agency (ESA)
Low Earth Orbit (LEO)

XMM-Newton Marks Another Year in Space

European Space Agency (ESA) craft in Very Eccentric Elliptical LEO studying X-ray emissions, star-forming regions, galaxy clusters, environment of supermassive black ...
American Geophysical Union (AGU)
Washington DC, USA

AGU 2027 Annual Meeting

Save the date for future Annual Meetings: December 13-17, 2027 | Washington, D.C. December 11-15, 2028 | San Diego
China National Space Administration (CNSA)
Guang Han Gong, 44.12°N 19.51°W, Moon Surface

Chang’E-3 Lander Marks Another Year on Moon

China National Space Administration (CNSA) spacecraft at Guang Han Gong "Moon Palace", Sinus Iridum / Mare Imbrium, 44.12°N 19.51°W, surpasses ...
National Aeronautics and Space Administration (NASA)
Low Earth Orbit (LEO)

WISE / NEOWISE Marks Another Year in Space

NASA Wide-field Infrared Survey Explorer spacecraft (redubbed Near-Earth Object WISE – NEOWISE) surpasses another full year in space today; launched ...
European Space Agency (ESA)
Sun-Earth L2 Lagrange point

Gaia Spacecraft Marks Another Year in Space

ESA spacecraft surpasses another full year in space today; now in extended mission phase working to map more than 1 ...
European Space Agency (ESA)
Mars Orbit

Mars Express Marks Another Year in Mars Orbit

ESA spacecraft surpasses next full year in Mars orbit today; will continue to study Mars atmosphere & climate, planet structure, ...

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