Lunar eclipses occur when Earth's shadow blocks the sun. There are three types; the most dramatic is a total lunar eclipse. Find out when the next one will be.
Arecibo Observatory has been used to send a SETI message as well as for scanning the skies for approaching asteroids. It collapsed in 2020.
Information about the asteroid Ryugu, which was explored by the Hayabusa2 spacecraft from 2018 to 2019.
An overview of the Voskhod spacecraft, which was used during the second Soviet human spaceflight program
Artificial satellites from Earth have only populated space since 1957, but there are now hundreds of thousands of objects from our planet in orbit.
New Horizons' historic flyby of the KBO 2014 MU69, also known as Arrokoth, has revealed incredible insights about the birth of the solar system.
Space mysteries: How gravitational waves could explain how our universe began when another one ended.
Spacewalks were indispensable for assembling the International Space Station. Today, they remain a crucial component for the space station's continued maintenance.
Twice a year, one hemisphere has its longest day of the year while the other has the longest night. These solstices are the astronomical beginning of winter and summer.
Equinoxes occur twice a year when the sun is directly above the equator, and signal herald the beginning of spring and autumn.
Tuesday's sky (Aug. 18) is host to a somewhat unusual lunar event in the Western Hemisphere: a third new moon in a season of four new moons, which some people call a "Black Moon."
The Dragon spacecraft first reached the International Space Station in 2012 and Crew Dragon became the first private, crewed spacecraft to reach the ISS in 2020.
The space roar, which was detected by NASA's ARCADE mission in 2006, makes space six-times louder than anyone was expecting — have we finally found the cause?
The Mercury 13 were a group of female pilots who passed the first astronaut tests, but weren't allowed to work for NASA because of their gender.