Another Look at Fermi’s Paradox

If intelligent alien life is so abundant, then where is it? Image Credit: NASA / HST

Enrico Fermi was a theoretical and experimental physicist known for his work on the first nuclear reactor and his contributions to quantum theory, particle physics, and statistical mechanics. He won the Nobel Prize in 1938 and was […]

Countering the Threat Posed by Orbital Debris

In this computer simulation, the sheer amount of orbital debris becomes apparent—as does the need to find a way to prevent it. Image Credit: NASA

There’s a lot of junk up there. Around 20,000 bits and pieces of satellites and old rocket parts, bigger than 5 cm (2 inches) across, are floating around […]

NASA's Fermi, Swift See 'Shockingly Bright' Burst

The maps in this animation show how the sky looks at gamma-ray energies above 100 million electron volts (MeV), with a view centered on the north galactic pole. The first frame shows the sky during a three-hour interval prior to GRB 130427A. The second frame shows a three-hour interval starting 2.5 hours before […]