Stars

Comets and Asteroids

Will a rogue star cause chaos in the Solar System?

At first glance Gliese 710 is not a very distinguished star. A K7 class orange dwarf a bit more than half as massive as the Sun, it currently lies about 63 light years from us in the constellation Serpens. It is moving fast though and that is why one reason Read more…

By Armagh Observatory and Planetarium, 9 years8 years ago

Altair, Deneb and Vega: three easy to spot stars

Around this time of year, go outside after 9pm on a clear night and look at the sky. Even if it is not quite dark a bright star will be visible in the south. This is Vega, the third brightest star in our sky (only Sirius and Arcturus are brighter). Read more…

By Armagh Observatory and Planetarium, 9 years5 years ago