The first thing they note is that the Fermi Paradox is a remarkably strong argument. You can quibble about the speed of alien spacecraft, whether it’s 1% the speed of light or 10% the speed of light.

An curved arrow pointing right. NASA's Fermi Gamma-ray Space Telescope can now detect solar flares occuring on the side of the sun it cannot see. This could help scientists better understand solar ...

For years, astronomers have been puzzled by the presence of two gigantic, high-energy “bubbles” towering over and beneath the Milky Way’s center, extending 50,000 light-years into space. First ...

Using XMM-Newton, Chandra and NuSTAR space telescopes ... suggested that the source may be a pulsar wind nebula. The Second Fermi-LAT Catalog of High-Energy Sources (2FHL) presents the locations ...