Almach looks like a single star to the eye and like a colorful double star through a telescope. But today we know Almach as four stars.
Achernar – also known as Alpha Eridani – is the 9th brightest star in Earth’s sky and the flattest star known.
The star Al Risha in Pisces is not bright. But – at the tip of the graceful V in Pisces – it’s very noticeable.
On (or around) Halloween, look for Algol – a star named for a demon!
The orange-colored star Mirach in the constellation Andromeda acts as your guide star to three different galaxies: M31 (Andromeda galaxy), M33 (Triangulum galaxy), and NGC 404.
Look for Deneb Kaitos – brightest star in Cetus the Whale – highest in the sky around mid-evening in northern autumn.
For much of the Northern Hemisphere, on clear nights you can always see the brightest star in the constellation Cassiopeia.
Gamma Cephei (aka Errai) is a binary star system with at least one planet. It’ll someday be a North Star for Earth.
Fomalhaut is sometimes called the Loneliest Star. Its planet Fomalhaut b was the first beyond our solar system to be visible to the human eye.
Delta Cephei doubles in brightness every 5.36 days. This star and others like it have helped establish the known scale of our galaxy and universe.