Nanotyrannus, a T. rex mini-me, coexisted with the big guys

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Nanotyrannus, a T. rex mini-me, coexisted with the big guys

One of the Dueling Dinosaurs fossils of Montana, which scientists thought was a juvenile T. rex, is actually a new Nanotyrannus species.

Shireen Gonzaga

November 5, 2025

Open star clusters are loose groups of stars

Open star clusters are young, loosely bound gatherings of stars that may still be surrounded by the nebula - or space cloud - in which they were born.

Kelly Kizer Whitt

November 5, 2025

See the best deep-sky photos of October 2025 here

Enjoy this gallery of deep-sky photos for October 2025 from our EarthSky community. If you have a great photo to share, send it in, too. We love to see them!

Armando Caussade

November 5, 2025

Yeast on Mars could survive, unique new research shows

A new study from scientists in India shows that yeast could survive on Mars, tolerating both shockwaves from impacts and toxic perchlorate salts.

Paul Scott Anderson

November 4, 2025

The quiet tapir: Rainforest’s unsung hero

The tapir might look weird, with the body of a pig and the trunk of an elephant, but this gentle giant helps grow the forest.

Cristina Ortiz

November 3, 2025

3 Earth-sized planets around double star surprise scientists

Astronomers discovered 3 Earth-sized planets in the binary star system TOI-2267. It's the first time where the planets are orbiting each individual star.

Paul Scott Anderson

November 2, 2025

Young Jupiter protected Earth from the sun, study finds

New simulations reveal how Jupiter protected Earth from the sun in our planet's early years, while also explaining a long-standing meteorite mystery.

Will Triggs

November 2, 2025

The year’s earliest solar noon is on November 3

November 3 brings the year's earliest solar noon - that is, earliest midday - by nature's clock. It's a harbinger of the Northern Hemisphere's earliest sunset.

Bruce McClure

November 2, 2025