Scientists have long questioned whether an early Earth could have contained the appropriate hydrogen and oxygen on its own to ...

Water from both volcanic rocks and deep mantle melted Earth's crust 1.6 billion years ago. This long-lasting melting formed ...

"With only lunar soil and a basic ingredient from the sun — which is always spitting out hydrogen — there's a possibility of ...

The space rock dates to around 4.6 billion years ago and is believed to be similar in composition to early Earth, according ...

Much of what scientists know about the early solar system comes from meteorites—ancient rocks that travel through space and survive a fiery plunge through Earth's atmosphere. Among meteorites, one ...

Earth Day was first celebrated in 1970, marking the beginning of the modern environmental movement. Saturday morning marked ...