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Viking 1 Mars Lander 53rd Landing Observation Anniversary

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

Apollo 11, 60th Observation

Global / Inter-Global
Organizer: National Aeronautics and Space Administration (NASA)
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

Heliocentric Orbit
Organizer: National Aeronautics and Space Administration (NASA)
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

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

Chandrayaan-3 Commemorated for Moon Landing (2023)

Statio Shiv Shakti, 69.373°S 32.319°E, Moon Surface
Organizer: Indian Space Research Organisation (ISRO)
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

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

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

World Space Week

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

Mars Odyssey Marks Another Year in Mars Orbit

Mars Orbit
Organizer: National Aeronautics and Space Administration (NASA)
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

Low Earth Orbit (LEO)
Organizer:
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

Statio Tianchuan, 43° N 51.9° W, Moon Surface
Organizer:
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

Asteroid 98943 Torifune Trajectory
Organizer:
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

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

Chang’E-3 Lander Marks Another Year on Moon

Guang Han Gong, 44.12°N 19.51°W, Moon Surface
Organizer:
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

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

NET 2030 — Launch Angara A5 / Luna-29

Vostochny Cosmodrome, Russia
Organizer: Roscosmos State Corporation
NET 2030 — Roscosmos hoping to launch Angara A5 with Luna-29 (Luna-Resurs 3) Moon South Pole lander and rover; mission ...

NET 2030 — Launch Millimetron (Spektr-M)

TBD
Organizer: Roscosmos State Corporation
NET 2030 — Russia hopes to launch Millimetron (Spektr-M) space observatory with a diameter of 10 meters to Sun-Earth L2 ...

255th Meeting of the AAS

National Harbor MD, USA
Organizer: American Astronomical Society (AAS)
At Gaylord National Resort & Convention Center.

Pōwehi Day

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

Europa Clipper to Insert into Jupiter Orbit

Jupiter Orbit
Organizer: National Aeronautics and Space Administration (NASA)
Europa Clipper mission to insert into Jupiter orbit on this day to study Galileo moon Europa through a series of ...

Yuri’s Night Celebrations

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

National Day of Space Flight

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

International Space Day

Worldwide
Organizer:
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

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

International Moon Day (Annual)

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

Viking 1 Mars Lander 54th Landing Observation Anniversary

Nationwide USA
Organizer: National Aeronautics and Space Administration (NASA)
First USA spacecraft to successfully land on another planet commemorated today for its accomplishment 54 years ago; originally scheduled for ...

Parker Solar Probe Marks Another Year in Space

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

Chandrayaan-3 Commemorated for Moon Landing (2023)

Statio Shiv Shakti, 69.373°S 32.319°E, Moon Surface
Organizer: Indian Space Research Organisation (ISRO)
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

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

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

Mars Odyssey Marks Another Year in Mars Orbit

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

Lucy Spacecraft 3rd Earth Flyby (660 km)

Jupiter Trajectory
Organizer: National Aeronautics and Space Administration (NASA)
NASA mission to encounter 11 asteroids, including a main belt and 7 Jupiter Trojans, to perform Earth flyby / gravity ...

NET 2031 — Launch Luna-30 Lander

Vostochny Cosmodrome, Russia
Organizer: Roscosmos State Corporation
Roscosmos State Corporation planning to launch Launch Luna-30 lander to deliver a reusable cargo delivery spacecraft with supplies for human ...

NET 2031 — Launch Ariane 6-4 / Argonaut

Launch Area 4, Guiana Space Centre, French Guiana
Organizer: European Space Agency (ESA)
European Space Agency planning to launch the Argonaut Lunar Descent Element -- lunar lander built by Thales Alenia Space to the ...

Parker Solar Probe Marks 13th Full Year in Space

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

243rd Galactic Tick Day

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

Transit of Mercury

Global / Inter-Global
Organizer: Sun-Mercury
Mercury to pass directly between Earth and Sun; observers see distant planet as small dot gliding slowly across face of ...

NET 2033 — Launch Long March 9 Test Flight

Wenchang Space Launch Center, Hainan Island, China (19° N)
Organizer: China National Space Administration (CNSA)
Tentative date for China to test launch its next-gen rocket intended to carry people and cargo to the Moon.

NET 2033 — Launch Luna-31

Vostochny Cosmodrome, Russia
Organizer: Roscosmos State Corporation
Roscosmos hoping to launch lander to deliver a heavy lunar rover weighing up to 5,000 kg, capable of mining / ...

Lucy to Flyby Asteroids 617 Patroclus and Menoetius

Jupiter Trojan camp at L5
Organizer: National Aeronautics and Space Administration (NASA)
NASA Lucy mission to come within 1,000 km of 113-km diameter 617 Patroclus and 104-km diameter Menoetius, p-type binary asteroids; ...

NET 2035 — Launch Luna-32

Vostochny Cosmodrome, Russia
Organizer: Roscosmos State Corporation
Roscosmos hopes to launch Luna-32 to deliver heavy modules weighing up to 5,000 kg for the construction of the International Lunar ...

NET 2035 — Launch Luna-33

Vostochny Cosmodrome, Russia
Organizer: Roscosmos State Corporation
Roscosmos hopes to launch Luna-33 orbiter to be used for communication and navigation for Human Moon Missions and lunar base.

Tianwen-2 to Rendezvous with Comet 311/P PanSTARRS

Comet 311/P PanSTARRS Orbit
Organizer: China National Space Administration (CNSA)
China asteroid sample return mission, having returned at least 100 grams from Kamo’oalewa (2016 HO3), to rendezvous with and begin ...

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