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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.
The more active regions of the sun seen in the photo appear brighter because they emit more light and energy.
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.
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 contains a high SPF, you're likely not wearing enough of it to actually keep your skin safe from sun damage.
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.
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.
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.
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.
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.