Doesn't it feel like the Universe is perfectly tuned for life? Actually, it's a horrible hostile place, delivering the bare…
Planet Earth is the birthplace of humanity, the cradle of human civilization, and the only known planet in our Solar…
Earth is the only planet in our Solar System where life is known to exists. Note the use of the…
With the discovery of water ice in so many locations in the Solar System, scientists are hopeful in the search…
At one time or another, all science enthusiasts have heard the late Carl Sagan's infamous words: "We are made of…
On Tuesday, December 16, 2014, NASA scientists attending the American Geophysical Union Fall Meeting in San Francisco announced the detection…
Gamma ray bursts (GRBs) are some of the brightest, most dramatic events in the Universe. These cosmic tempests are characterized…
When large asteroids or comets strike the Earth -- as they have countless times throughout our planet's history -- the energy…
Emily Lakdawalla is the senior editor and planetary evangelist for the Planetary Society. She's also one of the most knowledgeable…
Life has existed on Earth for billions of years, appearing shortly after the planet had cooled and liquid water became…