Potentially hazardous asteroid to pass Earth safely Monday

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Potentially hazardous asteroid to pass Earth safely Monday

A potentially hazardous asteroid, 2005 UK1, will safely pass Earth on January 12, 2026. At this time it will be more than 32 times the moon's distance away.

Kelly Kizer Whitt

January 8, 2026

Saturn-mass rogue planet revealed in unique new observations

Astronomers have discovered a Saturn-mass rogue planet nearly 10,000 light-years away. It's the 1st one found using both observatories on Earth and in space.

Paul Scott Anderson

January 8, 2026

Betelgeuse’s companion star leaves detectable wake

Astronomers have detected the influence of Betelgeuse's companion star, Siwarha, on the gas around the red supergiant star.

EarthSky Voices

January 8, 2026

See Mira the Wonderful waking up!

Catch elusive wonderful Mira, a famous variable star in the constellation Cetus, at its maximum brightness in February or March 2026.

Editors of EarthSky

January 8, 2026

Capella is one of the sky’s brightest stars

The 6th-brightest star in the night sky, Capella, in the Northern Hemisphere constellation Auriga the Charioteer, is also a point of the Winter Hexagon.

Editors of EarthSky

January 8, 2026

Cloud-9 is a new type of object: a failed galaxy

Cloud-9 is the 1st example astronomers have found of a failed galaxy. Hubble found the galaxy contains no stars, but it is home to dark matter.

EarthSky Voices

January 7, 2026

Ursa Major the Great Bear, home to the Big Dipper

Ursa Major the Great Bear is in Northern Hemisphere skies and is home to the asterism of the Big Dipper, which you can use to find other constellations.

Kelly Kizer Whitt

January 7, 2026