Astronomy

Mona Evans

People used to think comets were warnings of disasters. Today we know that they are icy visitors from the most distant regions of the Solar System. Other stars have exoplanets and they seem to have exocomets too.

Mona Evans

Who was really the first to orbit Earth? What is Snoopy's role in the manned space program? What sent an Australian teenager rushing to San Francisco? Which stars are Dnoces, Navi and Regor? Find out all of this . . . and more!

Mona Evans

The Solar System's large moons tend towards the weird and wonderful, and Triton is no exception. It has ice volcanoes, a strange “cantaloupe terrain”, and crazy seasons. It's the only large moon to orbit in the wrong direction, so it didn't form near Neptune. But where did it come from?

Mona Evans

The Summer Triangle is a stellar treat for northern mid-latitudes summer sky watchers. It graces the sky all night long in summer, and its three bright stars are visible even in urban areas. Under dark skies you can also see the Milky Way within the asterism.

Mona Evans

In a sky full of gods, heroes and wronged women, there are also four dogs. We have Canis Minor and the two dogs of Canes Venatici, but Canis Major is definitely top dog. It's a prominent constellation that has represented a dog from early Greek times.

Mona Evans

The International Astronomical Union is the official body in charge of naming celestial objects. But how do they name stars? Do all the stars have names? Can you buy a star name for a friend?

Mona Evans

What is the thread that unites: the Wizard Earl, the first recorded use of an astronomical telescope, Sir Walter Raleigh, Virginia, the Gunpowder Plot, and the Smithsonian? Syon Park, a historic estate on the River Thames in England.

Mona Evans

Observers used to call them “vermin of the skies”. Asteroids weren't interesting and their streaks ruined sky photos. But no more! They can tell us about the early Solar System. One of them may have finished off the dinosaurs, and more could be coming our way.

Mona Evans

When August comes around, the best sky show of the year is also on its way. The Perseids are an annual meteor shower. What's it all about and how can you see it?