Harvard-Smithsonian Center for Astrophysics theorist Avi Loeb says that modern time is not the ideal scenario to study the universe, but rather about 13 billion years ago was.

In a new paper, researchers from Harvard-Smithsonian Center for Astrophysics and Princeton suggest a new technique for finding aliens: look for their city lights.

New calculations by Ryan O'Leary and Avi Loeb (Harvard-Smithsonian Center for Astrophysics) suggest that hundreds of massive black holes, left over from the galaxy-building days of the early universe, may wander the Milky Way.

Astronomers are hunting an elusive target: rogue black holes that have been ejected from the centers of their home galaxies.

Astronomers have proposed an improved method of searching for intelligent extraterrestrial life using instruments like the one now under construction in Australia. This instrument could detect Earth-like civilizations around any of the 1,000 nearest stars.