The number of planets that orbit the sun depends on what you mean by “planet,” and that’s not so easy to define ...

Two new studies show a briny, carbon-rich environment on the parent body of the Bennu asteroid was suitable for assembling ...

Dec. 19, 2024 — New studies offer a clearer picture of how the outer solar system ... like Earth's. The explanation: the ice giants are layered ... Ancient Hot Water on Mars Points to Habitable ...

"[T]he puzzle for theoretical astrophysics has long been to figure out how ... from Earth to the sun.) Although most simulations created conditions very unlike the current solar system, the ...

The wannabe asteroid, announced on Jan. 2 as 2018 CN41, is actually a Tesla Roadster launched into space years ago by SpaceX ...

Though the planets are always “aligned,” seeing more than four in the sky is more uncommon. February’s lineup is a chance to ...

But surprisingly, the object’s orbit around the sun is similar to Earth’s, suggesting that 2024 PT5 originated from our corner of the solar system ... was when we found out that it was ...

When you gaze up at the constellation Hercules, you are looking out the front ... constitute the solar system are so insignificant that we can consider the entire mass a point in space.

Its immense heat and radiation can be very dangerous, which is why it is good that we are a distance away from it that we are ...

Plate tectonics give Earth its mountains, earthquakes, continental drift and maybe even helped give rise to life itself. But do other planets in the solar system have them too?

The formation of our solar system from a singular nebula raises an intriguing question: why did each planet develop with a ...

An object eight times the mass of Jupiter may have swooped around the sun, coming superclose to Mars' present-day orbit ...