On The Alien Question: Where Are They?
13.7: Cosmos And Culture,
The great physicist Enrico Fermi asked this question in the 1950s. There are more than 50 possible "solutions" to Fermi's…
The great physicist Enrico Fermi asked this question in the 1950s. There are more than 50 possible "solutions" to Fermi's…
Introduction Why is it so hard to find ET? After 50 years of searching, the SETI project has so far found nothing. In the…
You may have seen stories about this paper, which shows that the protoplanetary disk around a (very) young star system is full…
Introduction Gravitational lensing revealing multiple copies of the same…