Our lives are surprisingly dependent upon this extremely light and unreactive gas, yet supplies of it are remarkably fragile.

Our lives are surprisingly dependent upon this extremely light and unreactive gas, yet supplies of it are remarkably fragile.

"There is evidence that liquid water existed in Gale Crater for millions of years and probably much longer, which means there was enough time for life-forming chemistry to happen in these crater ...

"NTP systems work by pumping a liquid propellant ... chemical rocket engines," Back continued. "We are excited to continue our collaboration with NASA as we mature and test the fuel to meet ...

Which are the heaviest metals on earth? And what are their uses? Discover the metal that ranks heaviest based on density and ...

You've likely watched space shuttles launch using massive rockets, but how exactly do the rockets that are the backbone of ...

A stunning blue and white spiral spotted in skies across Europe late Monday was created by frozen fuel tumbling from a SpaceX rocket, according to weather forecasters and scientists. The UK's Met ...

"The spiral shape happened because the tumbling rocket was spinning as it released the fuel." - Spy satellite? - The swirl was created by the launch of SpaceX's NROL-69 mission. Exactly what it ...

PARIS - A stunning blue and white spiral spotted in skies across Europe late on March 24 was created by frozen fuel tumbling from a SpaceX rocket, according to weather forecasters and scientists.