Carl Sagan was born on November 9, 1934. Learn more about the movement to observe Carl Sagan day on that date every year
Is there life on Mars? Nobody knows. Why not try Venus? There could be life in the clouds. Learn more.
Scientists have proven that the heavy chemical elements appear when two neutron stars collide. Find out how they did it and whet it means for all of us.
There are unimaginably vast electromagnetic fields floating in space. New research may help explain where they came from.
Cosmologist Adam Frank lists 5 big questions that cosmology needs to answer. Find out what they are and what the current state of thinking is on them.
Scientists have been proposing a new "Planet X" in our solar system. Now two scientists suggest that it's a black hole. Find out why.
Find out how the constellations are viewed in various cultures and how indigenous star knowledge is being revived in North America.
Does correcting an error in the way cosmologists applied Einstein's equations solve the mystery we call Dark Energy?
Learn how scientists are using holographic technology to create desktop models of black holes for study.
Scientists have finally learned the mass of the tiniest elementary particle, the neutrino. Find out what this means for future studies.