life

Is the Universe Perfect for Life?

Doesn't it feel like the Universe is perfectly tuned for life? Actually, it's a horrible hostile place, delivering the bare…

9 years ago

Planet Earth

Planet Earth is the birthplace of humanity, the cradle of human civilization, and the only known planet in our Solar…

9 years ago

What is the Earth’s Average Temperature?

Earth is the only planet in our Solar System where life is known to exists. Note the use of the…

9 years ago

Astronomy Cast Ep. 375: The Search For Life in the Solar System

With the discovery of water ice in so many locations in the Solar System, scientists are hopeful in the search…

9 years ago

What Does It Mean To Be ‘Star Stuff’?

At one time or another, all science enthusiasts have heard the late Carl Sagan's infamous words: "We are made of…

9 years ago

NASA’s Curiosity Rover detects Methane, Organics on Mars

On Tuesday, December 16, 2014, NASA scientists attending the American Geophysical Union Fall Meeting in San Francisco announced the detection…

9 years ago

Gamma Ray Bursts Limit The Habitability of Certain Galaxies, Says Study

Gamma ray bursts (GRBs) are some of the brightest, most dramatic events in the Universe. These cosmic tempests are characterized…

9 years ago

Ancient Martian Life May Be Preserved in Glass

When large asteroids or comets strike the Earth -- as they have countless times throughout our planet's history -- the energy…

10 years ago

Where Should We Look for Life in the Solar System?

Emily Lakdawalla is the senior editor and planetary evangelist for the Planetary Society. She's also one of the most knowledgeable…

10 years ago

How Long Will Life Survive on Earth?

Life has existed on Earth for billions of years, appearing shortly after the planet had cooled and liquid water became…

11 years ago