Planetary formation made the news in three different ways this week. Find out how surprising results from studies of a meteorite, a debris field and the planet Venus all shed new light on our own planet's deep history.
Carl Sagan was born on November 9, 1934. Learn more about the movement to observe Carl Sagan day on that date every year. (4:00 min read)
Is there life on Mars? Nobody knows. Why not try Venus? There could be life in the clouds. Learn more. (4:00 min read)