Space
An International Space Station Leak Is Getting Worse—and Keeping NASA Up at Night
A NASA inspector general report gives new details on a leak that has plagued the ISS for five years, and reveals that the agency considers it the highest-level risk.
Breaking the Law
Stephen Hawking Was Wrong—Extremal Black Holes Are Possible
End of the Universe
The Vacuum of Space Will Decay Sooner Than Expected
left in space
