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How to See All Six Apollo Moon Landing Sites

Walk in the astronauts' footsteps as you explore the places they visited in the heyday of Apollo program. Use these helpful maps to start you on your way.

Celestial Objects to Observe

Crazy About Concentric Craters

With the Moon riding high this week, what better time to look for its three best-known yet enigmatic "ring" craters? We welcome back the waxing Moon this week. It's a chance for many of us to put dark-sky targets on the back burner and give some love to she who lights the night.…

Celestial News & Events

Are You Game for a Dawn Conjunction?

Will you brave the cold Friday morning to witness the conjunction of Saturn and the waning Moon?

Image of red Moon during lunar eclipse April 15, 2014

Celestial News & Events

Wake Up to a Total Lunar Eclipse on October 8, 2014

Start your day with an eclipse of the full Moon! On the morning of October 8, 2014, a total lunar eclipse will be visible across most of North America.

Crescent cradles the 'old moon'

Stargazing Basics

Earthshine, the Moon's Darker Side

Explore the Moon's dark side with the aid of earthshine.

Moon and Saturn on July 7, 2014

Celestial News & Events

Two Moon-Planet Conjunctions Juice Up July

On July 5th, the Moon has a remarkably close brush with Mars, followed two nights later by a similar rendezvous with Saturn.

The Moon's southern highlands


Take a Moon Walk Tonight

Explore the Moon with binoculars or a telescope.

an adult and two children look at something offscreen while sitting in front of a crowd of people

Cosmic Relief with David Grinspoon

Lunar News Flash

Did scientists make LCROSS seem like a dud by raising expectations of a spectacle?