Mercury

NASA's Planetary Science Division Director, Jim Green, speaks to planetary scientists Faith Vilas about Mercury and what it can tell us about planet formation.

Scientists have discovered a metal-heavy cannonball of an exoplanet resembling an Earth-size version of Mercury.

Skywatchers can get an eyeful of planets over the next few days, both in the early morning and the evening (provided the clouds of Winter Storm Quinn don't ruin the view).

About half an hour after sunset tonight (Nov. 28), Mercury will shine close to Saturn in the early-evening sky for the first of three close approaches between the two planets.

Now is the time to look up and see Mercury, a planet that usually lingers too close to the sun for skywatchers on Earth to observe.

Thanksgiving is often thought of as the one time of the year for family and friends to get together. But after the afternoon feast has been consumed, why not go for some stargazing?

It's almost time to bid a fond farewell to the showpiece of the solar system: the magnificent ringed planet Saturn.

Mercury has much more ice scattered across its north pole than previously thought, new research suggests — both inside craters as well as in shadowed terrain between them.

Once each year in the fall, Mercury moves into favorable position to be seen in the morning twilight sky; during this 10-day time frame, the so-called "elusive planet" is not so elusive to see.

Scientists are taking to the skies to chase the shadow of the moon and study the total solar eclipse on Aug. 21 from the unique vantage point of two retrofitted WB-57F jets.

Astronomers have found the hottest known exoplanet, a world where temperatures exceed those on the surface of most stars.

Planets and other celestial bodies can take many types of paths through space. Learn all about the different kinds of orbits in the sixth episode of "We Don't Planet."

Mars enjoyed about 400 million years of relative peace between two giant-impact epochs long ago, a new study suggests.

Chat with "Albert Einstein" using a Facebook Messenger chatbot, released just in time for the March for Science.

Is it possible that one of NASA's original astronauts mapped the site of a sunken treasure from orbit — and it remained a secret for nearly 55 years?

Humans have sent spacecraft to the moon, the red planet Mars and even distant interstellar space, but can we send a spaceship to the scorching sun?