Magazine

Astronomy for beginners

Galaxies in the gazelle

Telescopes and Equipment

How to collimate your telescope

Robotic Spaceflight

Who actually repaired Hubble?

Galaxies

Observe the Sombrero galaxy

Observing, The Moon

The Moon buzzes the Beehive

Solar System

What’s that odd meteor?

Astronomy for beginners

Spot the ring that hides in the Little Dipper

Science, Solar System

How do astronomers determine the Sun’s sibling stars and where the Sun originated?

Solar System

Oumuamua: Still a mystery

Cosmology, Exotic Objects

In the first gravitational wave detection, black holes with masses of 29 and 36 Suns created a 62-solar-mass black hole. Three Solar masses were lost; how do black holes lose mass?

Cosmology, Galaxies

Will the Pinwheel Galaxy (M33) merge with the Andromeda Galaxy (M31) prior to Andromeda merging with the Milky Way?

Science

Hawaii’s getting a stellar new observatory