NASA’s Voyager mission completed humankind’s first close-up exploration of the four giant outer planets of our solar system.

Sunspots, which are temporarily darkened areas on the surface of the sun ... this solar weather. Recently, however, astronomers have been keeping track of starspot activity on a red giant star ...

Narrator: Serious scientists, like myself, believe our solar system was formed by the collapse of a giant cloud of gas and rock and is held together by the gravitational pull of the Sun.

Narrator: Serious scientists, like myself, believe our solar system was formed by the collapse of a giant cloud of gas and rock and is held together by the gravitational pull of the Sun.

Mars is a famously red object in our solar system, but it’s not the reddest. That honor goes to Amalthea, a tiny moon orbiting around massive gas giant planet Jupiter. NASA’s Juno spacecraft ...

An object eight times the mass of Jupiter may have swooped around the sun ... solar system, the researchers found that in approximately 1% of the simulations, the visitor's passage altered the ...

Discover how a giant interstellar cloud known as the solar nebula gave birth to our solar system and everything in it. The solar system as we know it began life as a vast, swirling cloud of gas and ...

As the sun grows into a red giant, its outer layers will expand ... humanity’s best chance of survival may lie in the outer solar system’s moons, where water might exist under thawed ice ...