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

Inouye Solar Telescope (DKIST) has captured another stunningly close look at the surface of our sun. DKIST has collected ...

Coronal holes are dark regions on the Sun seen in extreme ultraviolet and X-ray images. These areas have lower density and ...

Hubble celebrates its 35th launch anniversary tomorrow (April 24), but there is a slight, yet tangible, damper in the air.

He wasn't wrong—the sun is 99.8 percent of the mass of the solar system. But what is that giant ball of fire in the sky? How ...

New research on recent solar intensity revealed connections to a 100-year solar cycle, which could lead to a continuous ...

The company’s ambitious new Sunbird design aims to harness nuclear fusion in space, despite the fact that commercializing ...