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This image of Mercury uses enhanced colors to emphasize chemical, mineralogical, and physical differences on the planet's surface.

Mercury is traveling across the sun for the last time until 2032. Here’s how to watch the rare transit.

The Mercury transit won't appear in space again until 2032. But if you want to watch the event, don't look at the sun without protection.

NASA just released a photo of the sun that looks like the face of a fiery Halloween pumpkin

The more active regions of the sun seen in the photo appear brighter because they emit more light and energy.
A view of Earth taken by NASA's Earth Polychromatic Imaging Camera.

The first day of fall has arrived. Here’s how the equinox marks the changing of seasons.

The autumnal equinox happened at 3:50 a.m. ET on September 23, 2019. Here's how Earth and the sun work together to change our seasons.
When a star like our sun dies, it casts off its outer layers of gas, leaving only the hot core behind. A burned-out star, called a white dwarf, is the white dot in the center of this image taken by the Hubble Space Telescope.

Dead planets can ‘broadcast’ for up to a billion years, and they could tell astronomers what will happen after our sun blows up

Finding dead planets' radio broadcasts can help scientists learn how the sun's death in 5 billion years will affect our solar system.
Even if your foundation has SPF, you're likely not using enough of the stuff to get adequate sun protection.

Makeup with SPF can protect you from the sun, but not as well as you think

Even if your foundation contains a high SPF, you're likely not wearing enough of it to actually keep your skin safe from sun damage.
A Manhattanhenge sunset on 42nd Street July 11, 2014.

A stunning ‘Manhattanhenge’ sunset is happening on Friday and Saturday in New York City. Here’s how to see it.

The sun will dip perfectly between buildings in Manhattan to create a spectacle of light on Friday, July 12, and Saturday, July 13, 2019.
Friends watch the eclipse on August 21, 2017 in Menan, Idaho.

A total solar eclipse will be visible on July 2 for the first time since 2017 — here’s how you can watch it anywhere in the world

On July 2, parts of Chile, Argentina, and the south Pacific Ocean will experience a total solar eclipse — the first such celestial event since 2017.
A total solar eclipse is photographed from atop Carroll Rim Trail at Painted Hills, a unit of the John Day Fossil Beds National Monument, near Mitchell, Oregon, U.S. August 21, 2017

Watch NASA’s livestream of the total solar eclipse in South America

NASA partnered with the Exploratorium to offer a chance for the rest of the world to see the total solar eclipse via livestream on July 2, 2019.

An animated map shows every total solar eclipse around the world until 2040

Solar eclipses happen across the globe at least once a year. Not all of them appear over populated areas, but some may happen close to you.
A man jumps off of Stonehenge during summer solstice celebrations.

The June solstice comes on Friday. Here’s why the event kicks off summer and winter at the same time.

In the northern hemisphere, June 21 will be the longest day of the 2019. But in the southern hemisphere, it will be the shortest.