Gain access to all articles, ad-free browsing, exclusive content, The Vault, and other benefits! T he European Space Agency’s ...

Solar Orbiter just delivered its most jaw-dropping image yet—an enormous, detailed snapshot of the Sun's blazing outer ...

Exactly 35 years ago this week, the Hubble Space Telescope was released from the Space Shuttle Discovery cargo hatch. Four ...

Skywatchers worldwide are in for a charming cosmic display before the sun rises Friday, as three celestial bodies will appear ...

San Antonio-built satellites on mission to stare at the sun, opened their eyes and tested their thrusters for the first time last week.

Skywatchers worldwide are in for a charming cosmic display before the Sun rises Friday, as three celestial bodies will appear in close conjunction.

Researchers have developed a new coronagraph that could make it possible to see distant exoplanets obscured by light from their parent stars.