Observation / Anniversary

NASA, Cal-tech high-energy astrophysics satellite surpasses another year in space, having launched on this day in 2012.

NASA ARTEMIS P2 craft surpasses another full year in lunar orbit since 2011; 1 of 5 satellites launched 2007 to ...

NASA Curiosity (Mars Science Laboratory) rover surpasses another full year of operations on Mars surface today; launched Nov 26, 2011 ...

NASA craft reaches 14 full years in space today, having launched in 2011 and reaching Jupiter on July 4, 2016; ...

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

India orbiter surpasses another full year in lunar polar orbit since reaching the Moon in 2019; Chandrayaan-2 lander and rover ...

Chandrayaan-3 Vikram lander and Pragyan rover celebrated today after successfully landing on Moon in 2023; marking India as the 4th ...

NASA spacecraft surpasses another full year in space today, launched 2012; adding to the understanding of Earth radiation belt environment ...

Japan's X-Ray Imaging and Spectroscopy Mission (XRISM), studying galactic plasma, surpasses another full year in space today at ~550-km LEO, having ...

NASA Mars Atmosphere and Volatile Evolution (MAVEN) spacecraft surpasses another full year of operations in Mars orbit after insertion on ...

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

Nationwide celebrations and educational events occur to observe NACA (National Advisory Committee for Aeronautics) first business day as newly-formed National ...

First solar observatory for China known as CHASE or Xihe / 羲和 surpasses another full year in space since launching ...

Detecting some of the most energetic radiation in space, ESA, NASA, Roscosmos spacecraft surpasses another year of operations in space, ...

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

NASA spacecraft mapping boundary between the Solar System and interstellar space surpasses another full year in space; launched on this ...

European Space Agency / JAXA Mercury Planetary Orbiter (MPO) and Mercury Magnetospheric Orbiter (dubbed Mio ‘waterway or fairway’) starts its ...

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

NASA craft imaging Sun and solar phenomena surpasses another full year in space today; launched 2006.

Awards include those named in honor of Neil Armstrong, Sally Ride, Carl Sagan, Patti Grace Smith, Dick Brouwer and John ...

Standard Time (USA): Change clocks back 1 hour from Daylight Saving to Standard Time; does not include Hawai’i, Arizona (except the ...

NASA 12-U CubeSat Capstone acting as a pathfinder for planned International Lunar Gateway surpasses another year around Moon today; launched ...