New simulations suggest that up to four of the solar system's rocky planets, including Earth and a long-lost world, once ...

A Nature study finds that many Sun-like stars start life with a tilt. Their spin axes and planet nurseries do not always line ...

Evidence that rocky planets beyond Jupiter formed as rapidly, and at the same time, as the inner planets could transform our ...

This happened about 4½ billion years ago. Then the planets began to emerge, as the billions of particles of gas and dust left over from the Sun’s formation became a flattened disk.

CAPE CANAVERAL, Fla. (AP) — Astronomers have discovered the earliest seeds of rocky planets forming in the gas around a baby ...

It contains just over 10 percent of our planet’s mass. Mars’ orbit takes it within about 1.38 times the Earth-Sun distance at closest approach.

As mentioned above, orbiting the sun at a distance of 3.81 light-years would bring a captured rogue planet awfully close to Alpha Centauri, which can catch its own rogues and hold them at a distance.

Those in the path of totality will also be able to see each of the naked-eye visible planets lined up around the eclipsed Sun on April 8, 2024. Jupiter (bright), Mercury (dimmer and up a bit from ...

Before the solar system had planets, the sun had rings — bands of dust and gas similar to Saturn’s rings — that likely played a role in Earth’s formation, according to a new study.

Toward the sun, things are hotter, solid, smaller. Outward of the asteroid belt, the planets are huge, slushy, and cold.

Also no. The reason why the planets are drifting is because the Sun is, incredibly slowly, converting mass to energy in nuclear fusion, and losing mass through the solar wind.