SPIE Photonics West Conference

San Francisco CA, USA
Organizer: Society of Photo-Optical Instrumentation Engineers (SPIE)
SPIE Photonics West and subconference on Optical Power Delivery, key to development of Space Solar Power.

Celebrate STS-1 & STS-135 with Bob Crippen and Chris Ferguson

West Palm Beach FL, USA
Organizer: Astronaut Scholarship Foundation (ASF)
NASA Astronauts Bob Crippen and Chris Ferguson will share personal highlights, stories and special moments of these historic flights, 45 ...
$1,000

Apollo 1, 59th Observation

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

Challenger STS-51L, 40th Observation

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

Explorer 1, 68th Observation

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

NET Feb — Launch SLS / Orion / Artemis 2

SLC-39B, Kennedy Space Center FL, USA
Organizer: National Aeronautics and Space Administration (NASA)
Planned 1st fully-crewed Orion Moon flight to last 10-14 days with 3 USA and 1 Canada Astronaut: Commander Reid Wiseman, ...

Columbia STS-107, 23rd Observation

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

Singapore Space Summit 2026

Marina Bay Sands / Sands Expo and Convention Centre , Singapore
Organizer: Office for Space Technology & Industry Singapore (OSTIn)
Space Summit 2026 is a space-focused conference with a boutique exhibition, highlighting trends, challenges and opportunities in the global space ...

Journey Through the Universe

Statewide Hawai’i, USA
Organizer: Gemini Observatory
Annual event in its 22nd year, inviting STEAM professionals and Maunakea Observatories staff to participate in 200+ Hawai'i classroom visits, ...

2026 Singapore Airshow (10th Edition)

Changi Exhibition Centre 9 Aviation Park Rd, Singapore, Singapore
Organizer: Civial Aviation Authority of Singapore (CAAS)
Singapore Airshow is one of the world’s most influential international aerospace and defence exhibitions, providing a platform for stakeholders to ...

Lunar New Year

China (Zhongguo) / Worldwide
Organizer: Lunar Calendar
Lunar New Year 2026 Spring Festival marks the Year of the Horse.

57th Lunar and Planetary Science Conference

The Woodlands TX, USA
Organizer: Lunar and Planetary Institute (LPI)
Expecting 2,000+ for the latest science, research, discoveries; at Waterway Marriott and online
$400 – $700

45th Observation of STS-1 Columbia Flight

Nationwide USA
Organizer: National Aeronautics and Space Administration (NASA)
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 ...

Pōwehi Day

Statewide Hawai’i, USA
Organizer: 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

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 ...

ASCE Earth & Space 2026 Conference

College Station TX, USA
Organizer: American Society of Civil Engineers (ASCE)
20th International Conference on Engineering, Science, Construction and Operations in Challenging Environments: ASCE Earth & Space 2026

Lyrids Meteor Shower Peak

Worldwide
Organizer: Comet C/1861 G1 (Thatcher)
Best seen from Northern Hemisphere, with a lower hourly rate in the Southern Hemisphere, Lyrids seem to stream from the ...

Hubble Space Telescope Marks Another Year in Space

Low Earth Orbit (LEO)
Organizer: National Aeronautics and Space Administration (NASA)
NASA spacecraft with 2.4-meter diameter main telescope begins 37th year in space today, launched Apr 24, 1990; could continue operations ...

National Day of Space Flight

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

International Space Day

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

Asia-Pacific Regional IAU Meeting (APRIM 2026)

Hong Kong, China
Organizer: International Astronomical Union (IAU)
The Asia Pacific Regional International Astronomical Union (IAU) Meeting is a highly anticipated gathering that convenes astronomers, researchers, and enthusiasts ...

2026 ASCEND Conference

Washington DC, USA
Organizer: American Institute of Aeronautics and Astronautics (AIAA)
Accelerating Space Commerce, Exploration, and New Discovery

John F. Kennedy 1st Moon Speech

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

32nd AIAA / CEAS Aeroacoustics Conference 2026

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

International Space Summit Africa

Pretoria, South Africa
Organizer: South African Radio Astronomy Observatory (SARAO)
Expecting 300 exhibitors, 500 companies, 25 countries, 3,000 B2B (business to business) meetings

Islamic New Year 1448 AH

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

NET Jul — Hayabusa 2, Asteroid 98943 Torifune Flyby

Asteroid 98943 Torifune Trajectory
Organizer: Japan Aerospace Exploration Agency (JAXA)
JAXA Hayabusa 2 mission to flyby S-type asteroid 98943 Torifune this month and rendezvous with asteroid 1998 KY26 in 2031, ...

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

Near-Earth Object (NEO)
Organizer: China National Space Administration (CNSA)
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) 50th Observation

Global / Inter-Global
Organizer: Space Age Publishing Company (SPC)
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 ...

Neil Armstrong Space Prizes to be Awarded

West Lafayette, Indiana
Organizer: Purdue University
Purdue University will bestow its newest honor – the Neil Armstrong Space Prize – upon those whose contributions to space ...

Viking 1 Mars Lander 50th 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 50 years ago; originally scheduled for ...

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 ...

Apollo 11, 57th 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 ...

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

Wenchang Space Launch Center, Hainan Island, China (19° N)
Organizer: China National Space Administration (CNSA)
NET Aug — CNSA to launch CE-7 mission which is planned to land at Moon South Pole to survey environment ...

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-2 Marks Another Year in Lunar Orbit

Moon Orbit
Organizer: Indian Space Research Organisation (ISRO)
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)

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 ...

40th 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
~5,000 attendees expected; student discount on registration fee; winners of student competition receive up to US$10,000
$1000

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 ...

International Observe the Moon Night 2026

Worldwide
Organizer: International Observe the Moon Night Organization
For observation, appreciation, understanding of the Moon / its connection to planetary science / exploration; 1st quarter Moon is best ...

ExoMars 2016 Orbiter Marks Another Year in Mars Orbit

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

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 ...

NET Nov — Chang’E-7 to land on Moon

Shackleton Crater Ridge, Moon Surface
Organizer: China National Space Administration (CNSA)
NET Nov — CNSA CE-7 mission planned to land at Shackleton Crater Ridge near Moon South Pole region to survey ...

Swift Spacecraft Marks Another Year in Space

Low Earth Orbit (LEO)
Organizer: National Aeronautics and Space Administration (NASA)
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)
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)
Japan Aerospace Exploration Agency (JAXA) Hayabusa surpasses another full year in space today; launched Dec 3, 2014, returned samples to ...

AGU 2026 Annual Meeting

San Francisco CA, USA
Organizer: American Geophysical Union (AGU)
Save the date for future Annual Meetings: December 7-11, 2026 | San Francisco December 13-17, 2027 | Washington, D.C. December ...

XMM-Newton Marks Another Year in Space

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

Sun-Earth L2 Lagrange point
Organizer: European Space Agency (ESA)
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

Sun-Earth L2 Lagrange point
Organizer: National Aeronautics and Space Administration (NASA)
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

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

NET 2027 — Launch Luna-26

Vostochny Cosmodrome, Russia
Organizer: Roscosmos State Corporation
NET 2027 — Roscosmos State Corporation, Launch Luna-26, Vostochny Cosmodrome, Russia: Roscosmos hopes to launch the Luna-Resurs O (Luna-Resurs Orbiter) to ...

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

Satish Dhawan Space Center, Sriharikota, India
Organizer: Indian Space Research Organisation (ISRO)
NET 2027 — ISRO to launch its Launch Vehicle Mark-3 (LVM3) with Chandrayaan-4 lunar lander from Satish Dhawan Space Center, ...

NET 2027 — Launch Long March 5 / Xuntian Telescope

Wenchang Space Launch Center, Hainan Island, China (19° N)
Organizer: China National Space Administration (CNSA)
NET 2027 — CNSA to launch Long March 5 with Xuntian space telescope from Wenchang Space Launch Center, Hainan Island, ...

249th Meeting of the AAS

Salt Palace Convention Center, Salt Lake City UT, USA 100 South West Temple, Salt Lake City, UT, United States
Organizer: American Astronomical Society (AAS)
At Salt Palace Convention Center.

2027 AIAA SciTech Forum

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

Apollo 1, 60th Observation

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

Challenger STS-51L, 41st Observation

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

Explorer 1, 69th Observation

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

Columbia STS-107, 24th Observation

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

Lunar New Year

China (Zhongguo) / Worldwide
Organizer: Lunar Calendar
Lunar New Year 2027 Spring Festival marks the Year of the Goat.

241st 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 ...

Pōwehi Day

Statewide Hawai’i, USA
Organizer: 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

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 ...

Hubble Space Telescope Marks Another Year in Space

Low Earth Orbit (LEO)
Organizer: National Aeronautics and Space Administration (NASA)
NASA spacecraft with 2.4-meter diameter main telescope begins 38th year in space today, launched Apr 24, 1990; could continue operations ...

Tianwen-2 Departs Kamo’oalewa (2016 HO3)

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

National Day of Space Flight

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

International Space Day

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

Islamic New Year 1449 AH

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

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 51st 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 51 years ago; originally scheduled for ...

Apollo 11, 58th 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 ...

IAUGA2027: IAU General Assembly

Rome, Italy
Organizer: International Astronomical Union (IAU)
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

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 ...

Lucy Mission Flyby of 3548 Eurybates / Queta

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

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-2 Marks Another Year in Lunar Orbit

Moon Orbit
Organizer: Indian Space Research Organisation (ISRO)
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)

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 ...

Lucy Mission Flyby of 15094 Polymele

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

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 ...

Lucy Mission Reaches 6 Full Years in Space

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