Natalie Wolchover

There are a couple of theories floating around about why the moon looks larger near the horizon. Either way, be sure to check out the effect during the "supermoon" on Saturday.

Have no fear of the supermoon this Saturday. Earth can handle its slightly-stronger-than-normal gravitational pull.

Finding a specimen from space takes hard work and dedication, but these steps will get you looking in the right direction.

Space law experts strongly disagree when it comes to the legal status of asteroid mining. Who owns mined materials – the company that goes and gets them, or all of mankind?

Dark matter has been called into question by a new survey of stars. But physicists think the survey, and not dark matter itself, is flawed, because the alternatives to dark matter theory are weak.

Have aliens erected a "monolith" on the surface of Mars?

A bright object that streaked across the daytime sky in Texas was actually a meteor, not a jet contrail.

A bright object that streaked across the daytime sky in Texas was actually a jet contrail, a NASA meteor expert confirms.

Spring is fireball season, as exemplified by a huge meteor that streaked across the Texas sky during the day last week. Scientists can't explain the seasonal uptick.

A shed-size metal object has been discovered outside a village in Siberia. Locals think it fell from space, but the Russian space agency doesn't recognize it as space technology.

YouTube users have found a strange dark object tethered to the sun that they say is a refueling UFO spaceship. What is it?

In a new video from NASA's Jet Propulsion Laboratory, a scientist addresses many of the claims surrounding the 2012 "Mayan apocalypse."

Misinformation about asteroid 2012 DA14 sparked unnecessary panic this week.

In a new paper, astronomers claim that a rare alignment of the Earth, moon and sun caused extreme tides that dislodged the iceberg that sunk the Titanic 100 years ago. Other scientists are skeptical.

The famous faster than light neutrino result appears to be a mistake caused by a faulty fiber optic connection.

Guns can shoot in space, and this allows for all kinds of absurd scenarios.

The Swiss CleanSpace One satellite will test ways to clean up space junk.

Japanese physicists have discovered that dark matter pervades interstellar space, extending from galaxy to galaxy to form an all-encompassing web of matter.

You should always wear sunscreen, but there's no need to wear more than normal during a solar flare.

A once-respected Russian scientist claims to have found evidence of life on Venus in 30-year-old photos.

Russia has accused the United States of accidentally downing its Mars-bound space probe with powerful radar. But scientists say this could not have been the case.

For 50 years, NORAD Tracks Santa has monitored Santa's progress during his annual Christmas Eve trip around the world.

Our familiar moon isn't alone up there, scientists say.

Two Earth-size planets have been discovered in a star system 950 light-years away, but unfortunately they don't quite have what it takes to host life.

String theorists have modeled the birth of the universe – the moment when three spatial dimensions broke free from the other six and expanded to produce space-time.