Magazine

Observing

Where are they?

Deep-Sky Objects, Observing

Lyra’s summer bino treats

Observing

Graphite pencils

Planets

Neptune at its peak

Exoplanets, Planets, Solar System

Missing petals

Cosmology

Time for a trade-in?

Astrophotography

Perseid meteor shower

Exoplanets, Observing, Planets, Solar System, The Moon

Are eight planets enough?

Milky Way

Treasures of Sagittarius

Cosmology

If gravitational waves come from two massive objects orbiting each other, then does the Earth-Moon system create gravitational waves? What frequency would they have?

Exoplanets, Planets, Solar System

How can astronomers be sure that Pluto is larger than Eris? Could we get a different number for Eris’ size once it’s visited by a spacecraft?

Stars

Asterism hunt