Supermoon

September's full moon in the northern hemisphere is known as the "Harvest Moon"—a name that may have originated from ancient Native American traditions.

The last time that a full moon and the spring equinox fell on the same day was March 20, 1981.

The full moon came within 221,681 miles of Earth.

The moon will be 221,681 miles away from Earth and will generate perigean spring tides, which are "higher than normal tides."

Here's how to watch the twin supermoon and total lunar eclipse event online.

But don't worry, it's not a sign of the apocalypse.

Why does this happen? Why do we always get a lunar eclipse during a full moon? What makes it red? My search for answers to questions like these fueled my interest in science.

Everything you need to know about the rare celestial event.

During such an eclipse, the full Moon moves into the shadow of the Earth cast by the Sun, and is momentarily darkened.

Next month a supermoon and a total lunar eclipse will coincide in what will certainly be a treat for stargazers.

Astronomer talks about celestial event that won't happen for another 17 years.

Total lunar eclipse will take place on January 21 and there won't be another until 2021.

The U.S. won't see another super blue blood trio until 2037.

The lunar eclipse can help scientists learn how to spot "biosignatures" on distant planets.

The moon will glow big, bright—and red.

Three separate lunar events will coincide next week.

The second supermoon of the month will glow a spectacular red.

The combination of lunar eclipse, supermoon and blue moon is incredibly rare.

NASA explains January's meteors, supermoons and a total lunar eclipse.

Photographers from around the world raced to capture the stunning moon.

Between the total solar eclipse, the supermoon, and potential space tourism, the moon was the distraction Americans needed in 2017.

The best time to watch it is shortly after sunset.

This moon has piled up a stunning array of adjectives—here's what they all mean.

See the best images of 2017's only supermoon here.

Here's how the December full moon got its name.

It's the first and only supermoon of 2017.

A few simple tricks can help get that mesmerizing snapshot.

This year's one and only supermoon can be visible out your window or livestreamed.

A supermoon occurs when a full moon coincides with the perigee of the moon's orbital cycle.

The two events are not to be missed.