The full moon happens about once a month. Find out when.
Here's a guide to all the rocket launches and astronomical events in 2021, as well as milestones for space missions, anniversaries and conferences.
A concentration of plasma in the Earth's atmosphere, called the ionosphere, interacts with solar winds, ultraviolet radiation and radio waves.
Tianwen-1 is the ambitious first independent interplanetary mission from China, now in orbit around Mars.
Find out what's up in your night sky during February 2021 and how to see it in this Space.com stargazing guide.
According to the New Testament, the Star of Bethlehem led the three wise men to Jesus' birth. Here are a few theories about what the star really was.
On Dec. 14, a total solar eclipse will be visible from South America. It will be the first and only total solar eclipse of 2020. Here's everything you need to know.
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