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International Observe the Moon Night 2021

People, Places, and Events

International Observe the Moon Night 2021

Join fellow lunar enthusiasts all over the world in celebrating the Moon this weekend.

Theia's hit-and-run collision, in color

Solar System

Two Impacts, Not Just One, May Have Formed The Moon

The Moon may have formed in a one-two punch, new simulations suggest.

Blue Moon

“True” Blue Moon Occurs Sunday, August 22nd

If skies are clear this weekend, we’ll see the full Moon. And not just any old full Moon, but the Blue Moon — the “true” Blue Moon.

Celestial Objects to Observe

It’s the Blue Moon . . . the “True” Blue Moon!

If skies are clear this weekend, you'll see the full Moon. And not just any old full Moon, but the Blue Moon . . . the "true" Blue Moon!

full Moon

Moon

7 Easy Things to See on the “Supermoon”

Seven easy and rewarding targets to explore when the Moon is full.

Water on the Moon

Solar System

Water on the Moon Isn't Just at the Poles

Water exists even on the sunlit Moon, a new study shows — trapped in glass beads but still extractable for lunar exploration.

Magma ocean and crust

Solar System

Moon’s Magnetism Might Have Protected Earth

The Moon's magnetic field, now long gone, might once have shielded Earth from the young Sun's radiation.

Moon over Sequoia National Park

Celestial Objects to Observe

International Observe the Moon Night Is Here

International Observe the Moon Night is here. Step outside Saturday evening and admire our closest celestial neighbor with your family.

USGS Geologic Map of the Moon

Solar System

New, Incredibly Detailed Geologic Map of the Moon

The U.S. Geological Survey (USGS) has released a new 1:5,000,000 map of the Moon that provides a wealth of information about its surface.

Gibbous Moon

Celestial Objects to Observe

Diving Into the Moon's Bay of Rainbows

This curious lunar feature — visible the nights of March 4th and April 2nd — is a delight in small scopes or even binoculars.

Yutu 2's view

Spacecraft and Space Missions

What Lies Beneath the Moon's Farside?

The Chang’e 4 mission made the first-ever landing on the farside of the Moon last year — now it’s providing a look at what lies below its surface.

Celestial News & Events

Crack Your Crescent Moon Record

Calling all crescent lovers! Here's a chance to set a new personal record by seeing one of the oldest moons ever.

Explore the Night with Bob King

Perseid Prospects, Mornings with Mercury and the Lunar X

With the Perseid shower, a great morning apparition of Mercury, and a chance to see craters scratch out an X on the moon, skywatchers have a busy week ahead! 

Armstrong, Aldrin & Collins

Celestial News & Events

Celebrate Apollo 11 with a Visit to Armstrong, Aldrin and Collins Craters

Find the craters named for the three astronauts who flew the first manned mission to land on the Moon.

The Moon

Moon

Before Apollo: The Scientists Who Discovered the Moon

Eleven scientists defined lunar science in the 360 years after the invention of the telescope and before humans arrived on the Moon.

Two planets colliding

Solar System

Could a Long-Ago Collision Explain Our Two-Faced Moon?

New research shows that a planetoid impact could have made our Moon asymmetric.

Craters on the Moon, by age

Solar System

Asteroid Impacts Increased 290 Million Years Ago, Lunar Craters Reveal

Researchers have estimated the ages of craters on the lunar surface, finding that the rate of large impacts nearly tripled 290 million years ago — an increase that might be ongoing.

Explore the Night with Bob King

A Space Rock Strikes Moon During the Total Lunar Eclipse

The Moon got bonked by a space rock during Sunday's total lunar eclipse. Take a look!

Explore the Night with Bob King

Your Guide to January's Supermoon Total Lunar Eclipse

The first full Moon of 2019 meets Earth's shadow in a widely visible total eclipse on the evening of January 20–21. Here's a guide on what to expect.

Extra helping

Explore the Night with Bob King

Gobble Up a Rare Thanksgiving Full Moon

This week, we give thanks for all the good things in life including a rare event — a full Moon on Thanksgiving. Make it your dessert after the big meal.

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