A NASA satellite that went silent nearly 60 years ago has shocked scientists by suddenly firing off one of the most powerful ...

Astronomers have discovered a peculiar star, exhibiting a unique combination of radio waves and X-rays, unlike anything previously observed. This celestial object, located within the Milky Way ...

When the Sun expands into a red giant, it will swallow the inner solar system and raise the temperature in the outer regions.

The images we're seeing of the Sun's cheeky grin don't do justice to just how huge it is. As ScienceAlert notes, this coronal hole is as wide as five Jupiters lined up side-by-side, which would ...

The sun will eventually become a red giant, and as it expands, it will engulf its nearest planets, including Earth. (Image credit: R. Kamlah et al. 2025) Sunspots.

Discover Alaska’s summer extremes, from midnight sun and giant mosquitoes to wild bears and glacier tours, in this humorous travel story. From beach dreams to polar bear fears: ...

PUNCH mission overview. Launched into polar orbit on March 11, 2025, PUNCH’s primary objective is to make global, continuous, three-dimensional observations of the Sun’s outer atmosphere and ...

If you look just right, the Sun appears to be opening its mouth and laughing at us. As ScienceAlert reports, this "hole" on the Sun is what's known as "coronal hole," which occurs when the star's ...

Take Europa, for example. It's an icy world today and will stay that way for a long time. However, when the sun enters the red giant phase of its evolution in about 12 billion years, researchers ...

If you look just right, the Sun appears to be opening its mouth and laughing at us. As ScienceAlert reports, this "hole" on the Sun is what's known as "coronal hole," which occurs when the star's ...

If you're feeling stuck and wonder what it might be like to be in the vastness of the universe, here are the greatest movies ...