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Exoplanet atmospheres are a key to habitability
The habitable zone of a planet might be key to whether life can survive there. But so are exoplanet atmospheres, scientists say.
November 20, 2025
Lost sisters of the Pleiades are scattered across the sky
Astronomers have discovered that the Pleiades star cluster has more than 3,000 sibling stars that originated from the same giant molecular cloud.
November 19, 2025
What’s a red dwarf? Only the most abundant Milky Way star
A red dwarf star is the smallest and coolest type of star known. They're also extremely common, making up around 75% of the stars in the Milky Way.
November 19, 2025
Was NASA’s ‘no life on Mars’ conclusion in the 70s wrong?
In the late 1970s, NASA declared 'no life on Mars' when the Viking landers failed to find organic molecules (but they did). So was that conclusion a mistake?
November 18, 2025
Meet Hamal, an ancient equinox star, in Aries the Ram
Meet Hamal, the brightest star in Aries, and learn why people sometimes refer to the March equinox point as the First Point in Aries.
November 18, 2025
Thieving seagulls and the human snack wars: Shouting works
Thieving seagulls judge your every word. Shout loud, save your fries, and savor the sweet victory of a lunch defended. This is beach war!
November 17, 2025
Dying old stars destroy their planets, new research shows
Astronomers have found new evidence that dying stars destroy their planets - with the closest planets at greatest risk - as the stars swell up into red giants.
November 16, 2025
Shape of a supernova detected 1 day after explosion
Astronomers used quick work to point a telescope at a supernova blast and detected the shape of a supernova just one day later.
November 16, 2025
See the Summer Triangle in the northern autumn sky
Look west in the evening to see the Summer Triangle in autumn. Its 3 bright stars - Vega, Deneb and Altair - are in 3 different constellations.
November 16, 2025
Triangulum galaxy is 2nd-closest to Milky Way
The Triangulum Galaxy, aka M33, is the farthest object you can see with the unaided eye, if in fact you can see it. But seeing it is a challenge.
November 15, 2025
