Amazon’s Black Friday sale is still live, and we’ve sifted through the bogus discounts to surface truly great deals on ...

Several small worlds beyond Jupiter are not just frozen rubble. Beneath their shining skins, many hide oceans of liquid water ...

There are several frozen moons in our solar system, orbiting the gas giants. Some of them, despite having temperatures that would make Antarctica feel tropical, have liquid water under the surface.

That’s also true for the other moons that provide the gravitational stress. As a result, the internal oceans may actually ...

According to the leading theory of how the Earth-Moon system formed (the Giant Impact Hypothesis), a Mars-sized object (named ...

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Key PointsAbout 4.5 billion years ago, a dramatic event transformed the young Earth when a large protoplanet known as Theia struck our planet ...

About 4.5 billion years ago, a colossal impact between the young Earth and a mysterious planetary body called Theia changed everything—reshaping Earth, forming the Moon, and scattering clues across ...

A protoplanet crashed into Earth more than four billion years ago, ejecting the Moon. It is now clear where the protoplanet ...

In the current issue of the journal Science, researchers determine the possible composition of Theia. The impactor’s ...

About 4.5 billion years ago, the most momentous event in the history of our planet occurred: a huge celestial body called Theia collided with the ...

The third-ever interstellar visitor in the solar system after 1I/Oumuamua (2017) and 2I/Borisov (2019), 3I/ATLAS or C/2025 N1 (ATLAS) was discovered on July 01, 2025. The object maneuvered nearest to ...