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45th Observation of STS-1 Columbia Flight

Nationwide USA
Organizer:
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:
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

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...

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

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

NET Jul — Hayabusa 2

Main Asteroid Belt
Organizer: Japan Aerospace Exploration Agency (JAXA)
Asteroid 98943 Torifune Flyby: JAXA Hayabusa 2 mission to flyby S-type asteroid 98943 Torifune this month and rendezvous with asteroid...

NET Q3 — Launch Long March 5 / Chang’E-7

Wenchang Space Launch Center, Hainan Island, China (19° N)
Organizer: China National Space Administration (CNSA)
CNSA to launch Long March 5 with Chang’E-7 lander from Wenchang Space Launch Center, Hainan Island, China (19° N); CE-7...

Tianwen-2

Near-Earth Object (NEO)
Organizer: China National Space Administration (CNSA)
Kamo’oalewa (2016 HO3) Rendezvous: China asteroid sample return mission, to arrive at Kamo’oalewa today to collect at least 100 grams...

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...

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) 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...

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...