Observation / Anniversary

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Today

    • Wednesday

     — National Aeronautics and Space Administration (NASA),

    Challenger STS-51L, 40th Observation

    Educational and ceremonial events held worldwide to advance space technology / education and honor 7 crew members killed in Shuttle ...

    Saturday

     — National Aeronautics and Space Administration (NASA),

    Explorer 1, 68th Observation

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

    • Sunday

     — National Aeronautics and Space Administration (NASA),

    Columbia STS-107, 23rd Observation

    Annual international conferences and events take place to further space exploration efforts in remembrance of Columbia 7 loss: Commander Richard ...

    Monday

     — United Arab Emirates Space Agency (UAESA),

    Hope Orbiter Begins Next Year in Mars Orbit

    UAE Hope Orbiter, studying Mars atmosphere and climate, reaches 5 full years / enters 6th year in Mars orbit today; ...

    Tuesday

     — Lunar Calendar,

    Lunar New Year

    Lunar New Year 2026 Spring Festival marks the Year of the Horse.

    Wednesday

    Sunday

    • Wednesday

     — National Aeronautics and Space Administration (NASA),

    45th Observation of STS-1 Columbia Flight

    Commemorations occur today in honor of 1st ever NASA Space Shuttle Columbia carrying John Young and pilot Robert Crippen around Earth on 54.5-hour mission in ...

    Friday

     — 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 ...

    Sunday

    Saturday

    Friday

     — National Aeronautics and Space Administration (NASA),

    Hubble Space Telescope Begins Next 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),

    National Day of Space Flight

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

    • Thursday

    Thursday

    Monday

     — USA Congress,

    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 ...

    • Monday

     — China National Space Administration (CNSA),

    Chang’E-6, Second Observation of Mission

    Chang'E-6 mission is commemorated, having landed on this day in 2024, and returning the first-ever samples from the lunar farside ...

    Friday

    Saturday

    Tuesday

     — Lunar Calendar,

    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 ...

    Tuesday

    Saturday

    • Sunday

     — Space Age Publishing Company (SPC),

    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 ...

    Friday

    Monday

     — National Aeronautics and Space Administration (NASA),

    Apollo 11, 57th Observation

    First Human mission to land on Moon in 1969; 1st steps by humans on another World taken by Commander Neil ...
    — Moon Village Association (MVA),

    International Moon Day (Annual)

    Celebrating the 1st people walking on the Moon / another celestial body – International Moon Day has been a recognized ...

    Thursday

    • Wednesday

    Wednesday

     — National Aeronautics and Space Administration (NASA),

    Parker Solar Probe Begins Next Year in Space

    NASA craft surpasses another full year in space today, having launched Aug 12, 2018; probe came within ~6.16M km of ...

    Thursday

     — Indian Space Research Organisation (ISRO),

    Chandrayaan-2 Begins Next 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 ...

    Sunday

    Sunday

     — National Aeronautics and Space Administration (NASA),

    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 ...

    • Sunday

    Monday

    Saturday

    Monday

     — Indian Space Research Organisation (ISRO),

    Astrosat Begins Next Year in Space

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

    • Thursday

    Sunday

     — World Space Week Association,

    World Space Week

    Celebrating international contributions of space science for betterment of the human condition; Oct 4 is 68th observation of 1st Space ...

    Wednesday

    Saturday

    Monday

     — National Aeronautics and Space Administration (NASA), Roscosmos State Corporation,
    Mars Orbit

    ExoMars 2016 Orbiter Begins Next Year in Mars Orbit

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

    Tuesday

    Saturday

     — National Aeronautics and Space Administration (NASA),
    Mars Orbit

    Mars Odyssey Begins Next 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 ...

    Monday

    • Monday

    Friday

    Friday

     — National Aeronautics and Space Administration (NASA),

    Swift Spacecraft Begins Next 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 ...

    • Tuesday

     — China National Space Administration (CNSA),

    Chang’E-5 Begins Next 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, ...

    Wednesday

    Thursday

     — Japan Aerospace Exploration Agency (JAXA),

    Hayabusa 2 Begins Next Year in Space

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

    Thursday

     — European Space Agency (ESA),

    XMM-Newton Begins Next 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 ...

    Monday

     — China National Space Administration (CNSA),

    Chang’E-3 Lander Begins Next 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),

    WISE / NEOWISE Begins Next Year in Space

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

    Wednesday

    Saturday

    Friday

     — National Aeronautics and Space Administration (NASA),
    Mars Orbit

    Mars Express Begins Next Year in Mars Orbit

    ESA spacecraft surpasses next full year in Mars orbit today; will continue to study Mars atmosphere & climate, planet structure, ...
    — National Aeronautics and Space Administration (NASA), European Space Agency (ESA), Canadian Space Agency (CSA-ASC),
    Sun-Earth L2 Lagrange point

    James Webb Space Telescope Begins Next Year in Space

    NASA (STSci) / ESA / CSA-ASC infrared astronomy telescope surpasses next full year in space since launching on this day ...

    • Sunday

    Tuesday

    Wednesday

     — National Aeronautics and Space Administration (NASA),

    Apollo 1, 60th Observation

    Increasing space awareness and education, remembrances and events honor three Apollo 1 crew members lost in 1967 during a launch ...

    Thursday

     — National Aeronautics and Space Administration (NASA),

    Challenger STS-51L, 41st Observation

    Educational and ceremonial events held worldwide to advance space technology / education and honor 7 crew members killed in Shuttle ...

    Sunday

     — National Aeronautics and Space Administration (NASA),

    Explorer 1, 69th Observation

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

    • Monday

     — National Aeronautics and Space Administration (NASA),

    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: ...

    Saturday

     — Lunar Calendar,

    Lunar New Year

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

    Thursday

    Monday

    • Saturday

     — 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 ...

    Monday

    Sunday

    Saturday

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

    Hubble Space Telescope Begins Next 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),
    China (Zhongguo)

    National Day of Space Flight

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

    • Friday

    Tuesday

     — 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 ...

    • Saturday

    Sunday

     — 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 ...

    Sunday

    Wednesday

    Sunday

    • Saturday

    Tuesday

     — 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 ...

    Friday

     — National Aeronautics and Space Administration (NASA),
    High Earth Orbit (HEO)

    Chandra X-ray Observatory Begins Next Year in Space

    NASA spacecraft in extended mission phase reaches 28th full year / begins 29th year of operations in space; instruments able ...

    • Thursday

     — National Aeronautics and Space Administration (NASA),
    Heliocentric Orbit

    Parker Solar Probe Begins Next Year in Space

    NASA craft surpasses another full year in space today, having launched Aug 12, 2018; probe came within ~6.16M km of ...

    Friday

     — Indian Space Research Organisation (ISRO),
    Moon Orbit

    Chandrayaan-2 Begins Next 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 ...

    Monday

     — 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 ...

    Monday

     — 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 ...

    • Monday

    Tuesday

    Sunday

    Tuesday

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

    Astrosat Begins Next Year in Space

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

    • Friday

    Monday

     — 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 ...

    Thursday

    Saturday

     — 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.

    Sunday

    Tuesday

     — European Space Agency (ESA), Roscosmos State Corporation,
    Mars Orbit

    ExoMars 2016 Orbiter Begins Next Year in Mars Orbit

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

    Wednesday

    Sunday

     — National Aeronautics and Space Administration (NASA),
    Mars Orbit

    Mars Odyssey Begins Next 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 ...

    Tuesday

    • Tuesday

    Saturday

    Saturday

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

    Swift Spacecraft Begins Next 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 ...

    • Wednesday

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

    Chang’E-5 Begins Next 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, ...

    Thursday

    Friday

     — Japan Aerospace Exploration Agency (JAXA),
    Asteroid 98943 Torifune Trajectory

    Hayabusa 2 Begins Next Year in Space

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

    Friday

     — European Space Agency (ESA),
    Low Earth Orbit (LEO)

    XMM-Newton Begins Next 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 ...

    Tuesday

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

    WISE / NEOWISE Begins Next Year in Space

    NASA Wide-field Infrared Survey Explorer spacecraft (redubbed Near-Earth Object WISE – NEOWISE) surpasses another full year in space today; launched ...
    — China National Space Administration (CNSA),
    Guang Han Gong, 44.12°N 19.51°W, Moon Surface

    Chang’E-3 Lander Begins Next 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 ...

    Thursday

    Sunday

     — European Space Agency (ESA),
    Sun-Earth L2 Lagrange point

    Gaia Spacecraft Begins Next Year in Space

    ESA spacecraft surpasses another full year in space today; now in extended mission phase working to map more than 1 ...

    Saturday

     — European Space Agency (ESA),
    Mars Orbit

    Mars Express Begins Next Year in Mars Orbit

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

    • Wednesday

     — Lunar Calendar,
    China (Zhongguo) / Worldwide

    Lunar New Year

    Lunar New Year 2028 Spring Festival marks the Year of the Monkey.

    Thursday

     — National Aeronautics and Space Administration (NASA),
    Nationwide USA

    Apollo 1, 61st Observation

    Increasing space awareness and education, remembrances and events honor three Apollo 1 crew members lost in 1967 during a launch ...

    Friday

     — National Aeronautics and Space Administration (NASA),
    Nationwide USA

    Challenger STS-51L, 42nd Observation

    Educational and ceremonial events held worldwide to advance space technology / education and honor 7 crew members killed in Shuttle ...

    Monday

     — National Aeronautics and Space Administration (NASA),
    Nationwide USA

    Explorer 1, 70th Observation

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

    • Tuesday

     — National Aeronautics and Space Administration (NASA),
    Nationwide USA

    Columbia STS-107, 25th Observation

    Annual international conferences and events take place to further space exploration efforts in remembrance of Columbia 7 loss in 2003: ...

    Tuesday

    • Monday

     — 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 ...

    Wednesday

    Monday

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

    Hubble Space Telescope Begins Next Year in Space

    NASA spacecraft with 2.4-meter diameter main telescope begins 39th 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.

    • Thursday

     — 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 ...

    • Monday

    Friday

    Tuesday

    • Monday

    Thursday

     — 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, 59th Observation

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

    • Saturday

     — National Aeronautics and Space Administration (NASA),
    Heliocentric Orbit

    Parker Solar Probe Begins Next Year in Space

    NASA craft surpasses another full year in space today, having launched Aug 12, 2018; probe came within ~6.16M km of ...

    Wednesday

     — 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 ...

    Wednesday

     — 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 ...

    • Wednesday

    Thursday

    Tuesday

    Thursday

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

    Astrosat Begins Next Year in Space

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

    • Sunday

    Wednesday

     — 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 ...

    Tuesday

    Thursday

     — European Space Agency (ESA), Roscosmos State Corporation,
    Mars Orbit

    ExoMars 2016 Orbiter Begins Next Year in Mars Orbit

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