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Alien 'warp drives' may leave telltale signals in the fabric of space-time, new paper claims
A new paper suggests that we may be able to spot alien spaceships hopping between distant stars using "warp drives" because the sci-fi-inspired technology would give off specific gravitational waves that are unlike anything else we know about.
The Milky Way may be surrounded by 'too many' mini galaxies, new discoveries reveal
Astronomers have just discovered two dwarf galaxy candidates orbiting our galaxy. The orientation of these entities suggests there could be up to 500 similar stellar clusters circling the Milky Way, which is more than double previous estimates.
Earth from space: Green River winds through radioactive 'labyrinth of shadows'
This 2018 astronaut photo shows a striking section of the Green River as it winds through Utah's "Labyrinth Canyon." The canyon's steep walls cast long shadows that hide many secrets, including caves and abandoned uranium mines.
'The beauty of symbolic equations is that it's much easier to … see a problem at a glance': How we moved from words and pictures to thinking symbolically
"Even the +, −, =, and × signs we take for granted only came into widespread use in the 17th century. Which means that the earlier algebraists we know of … all had expressed their equations mostly in words or pictorial word images"
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