Elizabeth Howell

Was there a so-called 'super-Earth' planet that formed inside the orbit of Mercury? If so, it might have been eaten by our sun.

For the first time, scientists have seen the shock wave emanating from an exploding star in visible light.

This week, a total solar eclipse will put on a dramatic celestial show, darkening the skies over Southeast Asia in what will be the only total eclipse of the sun this year.

An incredible new picture of the Milky Way shows our home galaxy glowing eerily in wavelengths invisible to the human eye, revealing zones of hidden star birth.

There is no substance to multiple media reports that an asteroid passing by Earth will cause earthquakes on our own planet, according to asteroid experts at NASA's Jet Propulsion Laboratory.

How, exactly, were scientists able to prove that briny water can be found on Mars?

A spectacular rock arch in Utah is safe from collapse for now, according to a study that used a new technique to listen to the arch's natural "hum" to measure its internal health.

Researchers recently visited two parks in Utah to monitor the health of some of the state's iconic natural arches.

Here are some misconceptions about Mars that just won't die.

The annual Perseid meteor shower is typically the most spectacular "shooting star" display for people in the Northern Hemisphere, and this week, skywatchers could be in for a remarkable show.

Beijing has seen explosive growth in recent years, with the physical size of the city quadrupling in just a decade, a new study reveals.

Even 4.67 billion miles (7.5 billion km) away from Earth, the New Horizons mission at Pluto could help scientists learn more about planet Earth.

One-third of Earth's largest groundwater basins are under threat because humans are draining so much water from them, according to two new studies.

Slinky snake robots could get a better grip when climbing, thanks to new research on how a seahorse's tail works, according to a new study.

The U.S. Fish and Wildlife Service (FWS) is planning to remove the eastern cougar from the endangered species list after determining the subspecies has likely been extinct for 70 years.

Tropical Storm Bill lurks menacingly near the coast of Texas in a photo taken from space yesterday (June 15).