New experiments show young rocky planets can generate water naturally when molten surfaces react with hydrogen in their early atmospheres.

Halloween is upon us and the 2025 spooky season is abuzz with talk of three cosmic visitors — Comet Lemmon, Comet SWAN and the interstellar traveler 3I ATLAS — said to be haunting the night sky. But ...

At magnitude 9.5, the Ghost’s Goblet is visible in binoculars and even more striking through a telescope, where its triangular core appears as the “cup” of a ghostly goblet. Astronomy contributor ...

In the beginning, when planets were newborn, they glowed like furnaces, vast oceans of molten rock wrapped in heavy blankets ...

Astronomers have discovered a rare planetary system that dances to a cosmic rhythm. Located 105 light-years away in the ...

Astronomer Avi Loeb outlines nine "anomalies" that he says support his hypothesis that interstellar object 3I/ATLAS is an ...

Washington, DC— Our galaxy’s most abundant type of planet could be rich in liquid water due to formative interactions between ...

Our galaxy's most abundant type of planet could be rich in liquid water due to formative interactions between magma oceans ...

Using NASA's Transiting Exoplanet Survey Satellite (TESS), an international team of astronomers have detected a new exoplanet ...

Today is Thursday, Oct. 30, the 303rd day of 2025 with 62 to follow. The moon is waxing. Morning stars are Jupiter, Mars, ...

Tests on olivine hint that water-rich exoplanets could generate H2O internally, possibly explaining ocean worlds and even some of Earth’s early water.

There is no evidence to support the idea that this interstellar object is anything but a comet, but let's double-check.