A recent study in Icarus suggests a wandering star could disrupt our solar system. Simulations reveal that a star passing ...

Scientists analyzed famed astronomer Johannes Kepler’s 1607 sketches of sunspots to solve a mystery about the sun’s solar cycle that has persisted for centuries.

Could a rogue star disrupt our peaceful solar system? Scientists are keeping a close eye on the galactic neighborhood, and ...

Mercury doesn't give up its secrets easily. The smallest planet in our solar system is also one of the most extreme—a ...

Simulations show that the stars’ tug could send Mercury, Venus or Mars crashing into Earth — or let Jupiter eject our world from the solar system.

The sun’s current activity, solar flares, and sunspots may be tied to its age. Image source: NSO/AURA/NSF. Because of the Earth’s size, some say it won’t be completely devoured, as Mercury ...

All seven of the other planets in our solar system are about to become visible at once in a great planetary ... Mercury, which is closest to the sun, takes about 88 Earth days to complete an ...

The Solar System also contains objects called comets. Comets are similar to asteroids, but are made of ice, dust and rocky material. As a comet approaches the Sun, it begins to vaporise , which ...