Conventional scientific wisdom has it that plants and other creatures have only lived on land for about 500 million years, and that landscapes of the early Earth were as barren as Mars.
Two NASA spacecraft, one studying the Saturn system, the other observing Mercury, are maneuvering into place to take pictures of Earth on July 19 and 20.
It's widely thought that the Earth arose from violent origins: Some 4.5 billion years ago, a maelstrom of gas and dust circled in a massive disc around the sun, gathering in rocky clumps to form asteroids. These asteroids, gaining momentum, whirled around a fledgling solar system, repeatedly smashing into each other to create larger bodies of rubble — the largest of which eventually cooled to form the planets.
Early Earth was not very hospitable when it came to jump starting life. In fact, new research shows that life on Earth may have come from out of this world.
Tiny bubbles of water found in quartz grains in Australia may hold the key to understanding what caused the Earth's first ice age.
Researchers from Northeastern University are among the many scientists helping NASA use the weightlessness of space to design stronger materials here on Earth.
On May 31, 2013, asteroid 1998 QE2 will sail serenely past Earth, getting no closer than about 3.6 million miles (5.8 million kilometers), or about 15 times the distance between Earth and the moon.
You approach the Tucson mountain retreat by a 500-foot path through saguaro cactus and palo verde. The squat, earth-colored structure looks a little bunker-like at first, but from closer up the walls turn out to be not concrete but rammed earth, with a rich layering of warm colors.
Fueled by industrial greenhouse gas emissions, Earth's climate warmed more between 1971 and 2000 than during any other three-decade interval in the last 1,400 years.
A structural biologist at the Florida State University College of Medicine has made discoveries that could lead scientists a step closer to understanding how life first emerged on Earth billions of years ago.
The Earth is dynamic. Indeed, what we perceive as solid ground beneath our feet is constantly changing.
Messier 77 is a galaxy in the constellation of Cetus, located approximately 45 million light-years away from Earth.
An asteroid the size of a small office block is due to whizz past Earth on Friday, traveling at over 28,000 miles per hour.
We can all be picky at times, but you probably think of this planet as reasonably bearable. In a new model for what constitutes a habitable zone, however, the Earth barely scrapes over the bar.
The European Space Agency's (ESA) Herschel space observatory has identified multiple arcs around Betelgeuse, the nearest red supergiant star to Earth.
The massive asteroid Apophis shot past Earth last night, on a trajectory that will bring it even closer during its next flyby in 2029.
The US Geological Survey is to decomission Landsat 5 - the longest-operating Earth observing satellite mission ever.
A study of water from the Martian interior shows that Mars was originally formed from similar building blocks to Earth, but evolved differently later on.
Three new crew members have set sail to join their Expedition 33 crewmates onboard the International Space Station (ISS).
The total mass of all life on Earth is about one third less than thought, a new analysis has indicated.