Planets

An artist's depiction of Kepler's latest planetary find.

Kepler Discovers More Than 1,000 New Exoplanets

The space telescope is still alive and kicking

An illustration of the path Mercury will take across the sun on May 9.

For The First Time in a Decade, Watch Mercury Cross the Sun's Face

Next week's transit of Mercury is one of the major astronomical events of the year

This artist's concept shows the distant dwarf planet Makemake and its newly discovered moon. Makemake and its moon, nicknamed MK 2, are more than 50 times farther away than Earth is from the sun.

Hubble Spies a Tiny Moon Orbiting Dwarf Planet Makemake

Our solar system still has plenty of surprises

Engineers have been working on improving Orion’s heat shield since the vehicle successfully traveled to space for the first time last year.

Inside the Grand Plan to Send Humans to Mars

NASA's innovative deputy administrator Dava Newman explains just how close we are to sending astronauts far, far away

The 1917 photographic plate spectrum of van Maanen's star from the Carnegie Observatories’ archive.

Scientists Discovered Exoplanets More Than 70 Years Earlier Than Thought

A 1917 glass plate discovered in an observatory archive records the first evidence of exoplanets

The Planet-Hunting Kepler Telescope Entered Emergency Mode

The probe suddenly went into a safe mode for unknown reasons last week

Pluto’s ‘heart’ is a giant crater that may be slowly moving across the dwarf planet’s surface, scientists say.

Pluto May Have a Wandering Heart

The enormous impact basin may be slowly traveling across the dwarf planet’s surface

The bright spots of Occator Crater are shown in enhanced color in this view from NASA's Dawn spacecraft.

New NASA Images Shed Light on Ceres’ Bright Spots

Yet the dwarf planet serves up fresh mysteries

Five New Things We Learned About Pluto This Week

A new set of studies paints Pluto as a weirder planet than scientists once thought

An artist's rendering of the sweltering surface of Venus.

A Giant Planetary Smashup May Have Turned Venus Hot and Hellish

A collision with a large object may have triggered changes deep inside the planet that ultimately affected its atmosphere

Explore the Magnificent and Mysterious Surface of the Moon in Pictures

At the National Air and Space Museum, beautiful images show how the moon's pockmarked surface is rife with mystery

When CO2 rises, wet and wild planets may lose their oceans to space.

Looking for Life Beyond Earth? Watch Out for Steam Bath Planets

Simulations show that water and CO2 can be a surprisingly deadly combo on some unfortunate worlds

A picture snapped by Spirit near Home Plate shows silica formations poking out of the soil, which may have been formed by microbial life.

Mysterious Martian 'Cauliflower' May Be the Latest Hint of Alien Life

Unusual silica formations spotted by a NASA rover look a lot like structures formed by microbes around geysers on Earth

A new analysis indicates that 22% of Sun-like stars harbor planets roughly the size of Earth in their habitable zones.

There Are Probably Way More Earth-Like Exoplanets Than We Imagined

A new analysis indicates that 22 percent of Sun-like stars may harbor planets roughly the size of Earth in their habitable zones

Super-Earth exoplanets may actually be severely uninhabitable, new research suggests.

“Earth-Like” Exoplanets May Actually Be Mini-Neptunes

Many newly discovered exoplanets may not be able to shed their dense hydrogen atmospheres, making them unsuitable for life

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Should Pluto’s Planet Status Be Reinstated? Not Yet

Discovery of a fifth moon circling Pluto has some questioning where the "dwarf planet" category still applies to this faraway member of the Solar System

An artist's conception of the star LkCa 15 and the nearby protoplanet

A Planet Spotted As It Begins To Form

Scientists using the Keck telescope in Hawaii have found what may be a protoplanet, the youngest planet ever found

Sofia Kovalevskaya, Emmy Noether and Ada Lovelace are just three of the many famous female mathematicians you should know.

Five Historic Female Mathematicians You Should Know

Albert Einstein called Emmy Noether a "creative mathematical genius"

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A Solar System Rich in Planets

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Music of the Heavenly Spheres (Part 2) — Holst, Haydn, Handel and More…

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