It has long been believed that the appearance of complex multicellular life towards the end of the Precambrian (the geologic interval lasting up until 541 million years ago) was facilitated by an increase in oxygen, as revealed in the geological record.
Scientists have found evidence that there was once an ancient lake on Mars that may have been able to support life, in research published today in the journal Science.
Scientists from NASA and the Planetary Science Institute in Tucson, Ariz., have identified what could be a supervolcano on Mars—the first discovery of its kind.
The volcano in question, a vast circular basin on the face of the Red Planet, previously had been classified as an impact crater.
Valley networks branching across the Martian surface leave little doubt that water once flowed on the Red Planet. But where that ancient water came from — whether it bubbled up from underground or fell as rain or snow — is still debated by scientists.
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 at The Open University (OU) and The University of Manchester have found conclusive proof that Ancient Egyptians used meteorites to make symbolic accessories.
The Universe is a considerably old neighbourhood, weighing in at approximately 13.8 billion years old. Our galaxy, the Milky Way, is also ancient - as some of its stars are more than 13 billion years old.
An international team of scientists has identified an ancient 100 kilometer-wide crater near the Maniitsoq region of West Greenland.
Astronomers using NASA's Spitzer and Hubble space telescopes have discovered that one of the most distant galaxies known is churning out stars at the rate of 100 per year.
Researchers have discovered that a recently-discovered type of ancient human interbred with our ancestors.
Archaeologists have managed to painstakingly unearth a 3,500-year-old "Door to the Afterlife" that was originally placed in the tomb of an ancient high-ranking Egyptian official in Luxor.