Christina Koch and Jessica Meir completed the first spacewalk with an all-women team. Since cosmonaut Svetlana Savitskaya became the first woman to do a spacewalk in 1984, women have participated in 42 spacewalks.
The Event Horizon Telescope project, including eight observatories and over 60 scientific institutions across more than 20 countries, has released the first image of a black hole.
On March 29, Anne McClain and Christina Koch will leave the relative safety of the International Space Station for a spacewalk to upgrade the craft’s batteries – the first-ever to be all-female.
Elon Musk says that the Starlink satellite constellation will maintain a line of sight to everyone on Earth, providing global internet connectivity.
The two satellites may test aspects of Starlink, a project to bathe Earth in high-speed internet access using nearly 12,000 spacecraft.
Launched in 1977, Voyager 1 traveled past Jupiter and Saturn and is now more than 11.66 billion miles (18.67 billion kilometers) from the sun, becoming the first spacecraft to enter interstellar space.
Mir was the first modular space station and was assembled in orbit from 1986 to 1996. It had a greater mass than any previous spacecraft.
The Very Large Array is the most versatile, widely-used radio telescope in the world.
Salyut 1 (DOS-1) was the first space station of any kind, launched into low Earth orbit by the Soviet Union on April 19, 1971. The Salyut program followed this with five more successful launches of seven more stations
Mariner 9 was launched successfully on May 30, 1971, and became the first artificial satellite of Mars when it arrived and went into orbit.