Mount Etna erupts

Italy’s Mount Etna has been erupting this week, spewing fountains of lava and ash into the sky.

Touchdown! Perseverance lands successfully on Mars

NASA's Perseverance mission conducted a picture-perfect landing on Mars today and has already sent back several images.

Dark streaks on Mars may be caused by salts and melting ice

Researchers at the SETI Institute say that mysterious dark streaks on sun-facing slopes on Mars, debated about for years, may be small landslides caused by a combination of salts and melting ice just below the surface.

Hundreds of fish species, including many we eat, are consuming plastic

As more and more plastic trash permeates the oceans, microplastics are making their way into fish and shellfish, and potentially into humans.

Moon skims past Mars and Aldebaran February 17-19, 2021

The waxing crescent moon pairs up with the faint planet Uranus on February 17, flits by the red planet Mars on February 18, and then joins up with the red star Aldebaran on February 19.

Farfarout is farthest object in our solar system yet known

Astronomers have confirmed that an object with the nickname of Farfarout is, to date, the farthest object we’ve seen in the solar system.

Hunkering down in winter weather

Snow, ice and cold temperatures wreak havoc across much of the United States in February.

Arc to Arcturus, a springtime star

Arcturus is one of the easiest stars to find. Late at night in February - earlier as the months pass - just locate the Big Dipper in your northern sky. Then follow the arc in the Dipper's handle to find yellow-orange star Arcturus.

Galaxies have magnetic fields, too! Images here

Until recently, magnetic fields in the outskirts of galaxies were too faint to be detected. Although it's still not clear what causes them or how they're maintained, astronomers have started to create images of their observations of galaxies' magnetic fields producing beautiful aurora-like effects. See them here.

For those at southerly latitudes, Canopus!

Far-northern skywatchers sometimes travel southward in winter, for a glimpse of Canopus - the sky's 2nd-brightest star - above the southern horizon. Can you see it? Details here.