Astronomy

Mona Evans

King of the Roman gods, comet-killer, two and a half times the mass of all the other planets put together, shortest day of any planet in the Solar System. It's Jupiter! Find out more.

Mona Evans

NASA's Dawn mission spent 14 months orbiting the asteroid Vesta. Vesta's an unusual object, too small to be a dwarf planet. Yet it has the Solar System's tallest mountain, and canyons as big as Earth's Grand Canyon. And it may help scientists to understand the early Solar System.

Mona Evans

When New Horizons made its historic fly-by of Pluto in 2015, it wasn't only Pluto that was surprising. Pluto's moon Charon also turned out to be complex and interesting. This meant names were needed for Charon's surface features too. A dozen have been approved, and exploration is the big theme.

Mona Evans

Mimas is named for a giant in Greek mythology, but Saturn's moon is no giant. It's less than 400 km (245 mi) across and the smallest body we know of that's rounded by gravity. The moon also has a bizarre resemblance to the Death Star in George Lukas's Star Wars films.

Mona Evans

The starter's pistol for the space race was fired on October 4, 1957. It was in the form of a small highly-polished sphere that orbited the Earth every 98 minutes. This was the Soviet Union's Sputnik, Earth's first artificial satellite. It shook up the United States, and there was more to come.

Mona Evans

Two English policemen chased a UFO through the Devon countryside. It was the planet Venus. A news reporter had quite a scoop when she found a UFO hovering over New York City. It was the planet Jupiter. Why are planets and stars often mistaken for spacecraft or aircraft?

Mona Evans

In the Chilean winter of 2010 thirty-three miners were trapped half a mile below the surface. They were in a hostile environment, a confined space, reliant on supplies from outside - similar to the problems of a space mission. Find out how NASA's decades of experience helped the Chilean rescuers.

Mona Evans

As the long days of summer slip away and the skies darken earlier, the first stars of autumn appear. The centerpiece is the Great Square of Pegasus. It's the key to other autumn sights, including the most distant object you can see without a telescope - it's a billion billion miles away.