All seven of the other planets in our solar system are about to become visible at once in a great planetary alignment – ...

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

Stargazers will be treated to a rare seven-planet alignment in February. This is what scientists hope to learn.

Does our Solar System have 9 planets or only 8? Astronomers have gone back and forth on that a lot, with Pluto now being classified as a dwarf planet. However, out beyond Neptune there could be ...

Especially since all seven of the other planets in our solar system are about to become visible at once in a great planetary alignment. According to New Scientist: “The great alignment, including ...

Baker said that there are other astronomical events that may be more interesting than the parade of planets. Baker said Mars ...

On Feb. 24, from west to east, you can see Mercury, Saturn, Neptune, Venus, Uranus, Jupiter and Mars, all spanning 117.5°, ...

An event called a "ring plane crossing" will occur between Saturn and Earth on March 23, 2025, when Saturn's rings will ...

turning this into a planetary parade of all seven planets in our solar system other than Earth. It will be difficult to see them all since Saturn, Mercury and Neptune will be quite close to the ...

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

Scientists believe that two asteroids might be fragments of long-lost "planetary embryos" from the early solar system.

While the composition of gas and dust in a molecular cloud is fairly uniform, everything changes once a star begins to form.