Soyuz MS-25 is scheduled to undock from the ISS on Sept. 23 at 4:37 a.m. ET. A NASA astronaut and two record-setting Russian cosmonauts are set to head back to Earth on Monday (Sept. 23), and you can ...
Comets are often described as "dirty snowballs." They are made up of ice, dust, and rocky materials. When a comet approaches the sun, the heat causes its ice to vaporise, creating a glowing coma (a ...