Is the universe finite or infinite?

Two possiblities exist: either the Universe is finite and has a size, or it's infinite and goes on forever. Both possibilities have mind-bending implications.

10 hours ago
4.6 / 5 (14) 17

Amazon says FAA drone approval already obsolete

The approval federal aviation officials gave Amazon.com last week to test a specific drone design outdoors is already outdated, the company's top policy executive said Tuesday in written testimony to a Senate subcommittee.

6 hours ago
1 / 5 (1) 0

Italian olive tree disease stumps EU

EU member states are divided on how to stop the spread of a disease affecting olive trees in Italy that could result in around a million being cut down, officials said Friday.

3 hours ago
not rated yet 0

More evidence for groundwater on Mars

Monica Pondrelli and colleagues investigated the Equatorial Layered Deposits (ELDs) of Arabia Terra in Firsoff crater area, Mars, to understand their formation and potential habitability. On the plateau, ...

7 hours ago
5 / 5 (3) 0