On January 4, 1970, NASA cancelled the Apollo 20 moon mission. This came just six months after Apollo 11 astronauts Buzz ...
NASA Earth Science Communications announced closure of The Earth Observer in December 2025. It preserves archives that document nearly 37 years of EOS missions and satellite data.
"How do you get to Mars when the launch vehicle is not necessarily going to Mars?" ...
Short-lived radioisotopes such as aluminum-26 influenced early solar system heat, water retention and the formation of Earth-like rocky planets, according to meteorite analyses and models.