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Today

    • Monday

     — Space Foundation,
    Colorado Springs CO, USA

    41st Space Foundation Space Symposium

    Theme: Building Capacity Through Innovation and Collaboration. Expecting 10,000+ registrants, 247 exhibitors, 24 space agencies, 1500+ organizations. At The Broadmoor ...
    Free
    — 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

    Saturday

    Tuesday

     — 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 ...

    Friday

     — 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 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.

    • Friday

     — 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 ...

    Monday

     — 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 ...

    Thursday

     — China National Space Administration (CNSA),
    Utopia Planitia, 25.1°N 109.9°E, Mars Surface

    First Landing on Mars by China, 5th Observation

    Tianwen-1 Lander and Zhurong Rover celebrated today for China's first successful landing on Mars; craft landed on this day in ...

    Monday

    Tuesday

     — 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

    Thursday

    Monday

     — 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 ...

    Tuesday

     — 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

    • Monday

     — China National Space Administration (CNSA),
    Apollo Basin, 153.99° W 41.63° S, Moon Surface

    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 ...

    Tuesday

     — Advanced Business Events,
    Pretoria, South Africa

    International Space Summit Africa 2026

    Expecting 300 exhibitors from 25 countries. At CSIR International Convention Centre.
    — 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

    Thursday

    Friday

    Tuesday

    Saturday

    Tuesday

     — 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 ...

    Monday

     — Spaceland, Italy, Space Summits,
    Rome, Italy

    World Astronomy, Astrophysics and Space Science Summit

    Meeting is dedicated entirely to the latest developments in all Astronomy, Astrophysics and Space Science related themes. The conference will ...

    Tuesday

    Thursday

     — SatCom Industry Association (SIA-India),
    New Delhi, India

    4th India Space Congress 2025

    Theme is Pioneering Innovations in Space Technology: India’s Journey towards Global Partnerships; key topics include entrepreneurship, legal aspects, lunar exploration. ...
    $100 – $275

    Saturday

    • Wednesday

    Saturday

     — 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 ...

    Sunday

     — 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 ...

    Monday

    Friday

    Monday

     — 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 ...
    — 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 ...
    — 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 ...

    Thursday

     — 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 27th full year / begins 28th year of operations in space; instruments able ...

    • Saturday

     — 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 ...

    Sunday

    Wednesday

    Wednesday

     — 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 ...

    Monday

    Thursday

     — 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 ...

    Sunday

     — 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

    Sunday

     — 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 ...

    • Tuesday

    Sunday

    Monday

    Monday

    Saturday

    Monday

     — 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.

    • Thursday

    Sunday

     — 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 ...

    Monday

    Wednesday

    Saturday

     — 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 ...

    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 ...

    Sunday

    Monday

    • Sunday

     — 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 ...

    Monday

    Friday

    Friday

     — 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 ...

    Sunday

    Monday

    • Tuesday

     — 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, ...

    Wednesday

    Thursday

     — 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 ...

    Monday

     — 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 ...

    Thursday

     — 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 ...

    Monday

     — 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 ...
    — 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 ...

    Wednesday

    Saturday

     — 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 ...

    Friday

     — 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 ...
    — 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, ...

    • Friday

     — 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 ...
    — Indian Space Research Organisation (ISRO),
    Satish Dhawan Space Center, Sriharikota, India

    NET 2027 — Launch Vehicle Mark-3 (LVM3) / Chandrayaan-4

    NET 2027 — ISRO to launch its Launch Vehicle Mark-3 (LVM3) with Chandrayaan-4 lunar lander from Satish Dhawan Space Center, ...
    — 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, ...

    Sunday

    Sunday

     — 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.

    Monday

     — 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.

    Tuesday

    Wednesday

     — 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 ...

    Thursday

     — 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 ...

    Sunday

     — 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 ...

    • Monday

     — 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: ...

    Saturday

     — Lunar Calendar,
    China (Zhongguo) / Worldwide

    Lunar New Year

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

    Tuesday

     — United Arab Emirates Space Agency (UAESA),
    Mars Orbit

    Hope Orbiter Begins Next Year in Mars Orbit

    UAE Hope Orbiter, studying Mars atmosphere and climate, reaches 6 full years / enters 7th year in Mars orbit today; ...

    Thursday

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

    Mars Perseverance Rover Begins Next Year on Mars

    Mars 2020 Perseverance Rover reaches 5 full years / enters 6th year on Mars surface having landed in Jezero Crater ...

    Monday

    • Monday

     — 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 ...

    • 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

     — 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 ...

    Sunday

    Saturday

     — 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 ...
    — 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

     — 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 ...

    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

    • Thursday

    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 ...

    • Tuesday

     — 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 ...

    Thursday

     — 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 ...
    — 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 ...

    Sunday

     — 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

    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 ...

    • Wednesday

    Monday

    Wednesday

     — 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 ...

    Sunday

    Tuesday

    Sunday

    Monday

    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

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