Are water-carved caves on Mars hiding alien life?

Researchers in China have discovered the 1st water-carved caves on Mars. Known as karst caves, they could provide a protective habitat for possible life.

What if a small black hole devoured you?

A professor of physics from Vanderbilt University, Robert Scherrer, describes what would happen to the human body if a small black hole passed through it.

What are these weird aurora blobs? Explainer here

On November 11, 2025, the severe geomagnetic storm produced weird aurora blobs along with the traditional aurora. These blobs were rare proton auroras.

Colorful life on exoplanets might be lurking in clouds

Researchers suggest searching for colorful life on exoplanets by looking for spectral features similar to ones in Earth's clouds caused by airborne microbes.

A fast-growing supermassive black hole in the early universe

Astronomers have spotted a galaxy in the early universe that has a supermassive black hole at its core that is much bigger than they expected.

Edwin Hubble born today and the expanding universe

In 2018, the International Astronomical Union voted to rename Hubble's law as the Hubble–Lemaître law to share credit between Edwin Hubble and Georges Lemaître.

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.

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.

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?

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.