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Science / Space

Melts in your mouth, not in microgravity.

The World of Chocolate

The Rich and Flavorful History of Chocolate in Space

From vacuum-sealed pudding to Blue Bell ice cream, astronauts have been taking the treat into orbit since the dawn of the space age

Best Space Photos of the Week

These Cosmic Visions Include a Moon Parade and a Naked Nebula

Jovian giants and newly seen stars are among our picks for the week’s best space-related images

Spire’s Austin Ellis shows off a satellite frame at Spire's San Francisco headquarters. Components, like the weather sensor, stack on top of each other inside the frame. Solar panels and antennae fold out from the frame once the device is in orbit.

New Satellite Network Launching This Year Aims to Improve Weather Forecasting

With a network of compact, low-cost weather satellites with smartphone-like internals, startup Spire plans to make future forecasts a lot more reliable

Best Space Photos of the Week

Cosmic Jaw-Droppers Include a Twisted Galaxy and an Aurora Rocket Volley

From Martian vistas to glowing red nebulae, check out our picks for the best space images of the week

The sun sets behind the BICEP2 telescope at the South Pole.

Nope, We Have Not Detected Gravitational Waves (Yet)

Leaked news from teams studying the early universe says the signal hailed as our first peek at space-time ripples really is just dust

A multihued aurora ripples across the night sky over Tromsø, Norway, on January 19. Auroras happen when high-energy particles from the sun slam into Earth's atmosphere, exciting gas molecules in the air and causing them to emit light. The colors seen depend on the type of molecules involved and the altitude at which the most interactions are happening. Green is the most common shade for auroras and is produced by oxygen molecules at relatively low altitudes—between 62 and 186 miles.

Best Space Photos of the Week

These Celestial Highlights Include Flowing Auroras and a Cracked Comet

Catch up on the week’s best space images, from a cyclone’s glowing eye to a surreal Martian vista

The International Space Station Will Soon Be Able to Measure Forest Density Using Lasers

Strengthening the planet’s forests is one critical way to combat climate change

Ten years ago this week, the Huygens probe gave scientists a first look at the icy surface beneath the haze of Saturn's moon Titan.

Best Space Photos of the Week

Best Space Photos of the Week: From Solar Flares to Saturn’s Moons

A spitting sun, a well-loved lake and a happy accident on Mars star in this week’s best space images

Hubble snapped this incredibly detailed view of the "Pillars of Creation" to help mark its 25th anniversary.

Top Space Pictures of the Week, From a Hubble Icon to Hungry Black Holes

Ghostly pillars, a dark nebula and a galaxy herd starred in some of the best image-driven stories released at a recent astronomy meeting

This artist's depiction shows a gas giant planet akin to Jupiter rising over an alien ocean.

New Super-Earths Double the Number of Life-Friendly Worlds

Three studies looking at small, rocky planets are helping astronomers figure out how common worlds like ours are in the galaxy

A composite image made in Payson, Arizona, on December 28 shows Comet Lovejoy as it seemed to pass a globular cluster of stars called Messier 79.

How to See This Green Comet With the Naked Eye

The “New Year’s Comet” is taking astronomers by storm with an unexpected showing, and it should only get brighter through early January

Arachnophobia, coral reefs, artificial cells and strange amphibians starred in some of this year's science finds you might have missed.

Ten Cool Science Stories You May Have Missed in 2014

ICYMI, there’s a newfound coral reef in Iraq, the smallest force has been detected and more in this year’s surprising science

Enthusiasts examining the patch for NROL-35 think the trident, fire and breeze through the character’s hair might represent the elements—water, fire and wind. “What that has to do with the actual payload, however, is anyone’s guess,” says space historian Robert Pearlman.

The Creepy, Kitschy and Geeky Patches of US Spy Satellite Launches

There may be method to the madness behind the outlandish designs of the National Reconnaissance Office mission patches

When Scott Kelly (right) goes to the International Space Station in 2015, he and his twin brother Mark (left) will participate in tests to study how spaceflight affects the body.

With An Eye To Mars, NASA is Testing its Astronaut Twins

Scott and Mark Kelly, the only twins to have traveled in space, are embarking on a mission to help NASA prepare for Mars

The few remaining scientists at NASA are hard at work on Earth trying to "solve gravity."

Think Big

Would Astronauts Survive an Interstellar Trip Through a Wormhole?

Well, it depends on your definition of “wormhole” …

Matthew McConaughey on a stark landscape. The real star of the film, says Lewis, are the panoramic vistas.

Why “Interstellar” Belongs in the Pantheon of the Best “Realistic” Science Fiction Films

The film follows a well-trodden path, says Smithsonian space historian Cathleen Lewis, who gives it a thumbs up

Virgin Galactic's SpaceShipTwo is seen gliding back to Earth after its first test flight in 2010.

Past Transit Tragedies Point to a Way Forward for Virgin Galactic

From a fatal Apollo fire to the sinking of the Titanic, history has a few lessons following last week’s spaceflight disasters

Curiosity is able to take pictures of itself on Mars using a camera mounted to its robotic arm. This mosaic was made from 55 snapshots taken in October 2012.

An Insider’s Biography of a Celebrity Mars Rover

The chief engineer for Curiosity offers a peek at the NASA rover’s tumultuous rise to stardom in a new tell-all book

2014 Ingenuity Awards

How One Physicist’s Pursuit of the Cosmos Took Off in Antarctica

Francis Halzen’s amazing experiment heralds the beginning of a new era in astronomy

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