Monthly Archives: April 2021

Ulysses was the robotic space probe sent to orbit and study the Sun at all latitudes that launched on October 6, 1990, and made three "fast latitude scans" of the Sun.

The Hubble Space Telescope was launched into low Earth orbit in 1990 and remains operational 30 years later. The Hubble Space Telescope has contributed to record-setting amounts of scientific...

Apollo 16 was the fifth crewed and penultimate mission to land on the Moon and the first mission to land in the lunar highlands. The second of Apollo's "J missions" was crewed by Commander John...

Apollo 13 was the nearly disastrous seventh crewed Apollo space program mission launched on April 11, 1970. It was meant to be the third Moon landing, but an abort occurred after an oxygen tank...

Apollo 6 was the second A-type mission of the United States Apollo program, which launched on April 4, 1968. Apollo 6 was an uncrewed test of the Saturn V launch vehicle and the final uncrewed Apollo...