Help Shape the Future of Space Exploration

Join The Planetary Society Now  arrow.png

Join our eNewsletter for updates & action alerts

    Please leave this field empty
Explore

Earth

Cradle of Life As We Know It

Earth is the only place we know of in the universe that harbors life. Ours is the largest terrestrial planet in the solar system. Our rocky, volcanic world is coated in a thin veneer of liquid water, living things, and translucent atmosphere, whose complicated interactions make Earth's surface into a place of constant change. We humans have only had fifty years of perspective on Earth as a planet, of seeing it as a "pale blue dot" floating in the black vacuum of space.

With that perspective, we know precious and unique our planet is. We know, too, that we are having measurable effects on the complex interactions of ocean, land, life, water, and air, changing our climate. But predicting the future of our climate is hard. Understanding how Earth's systems work by studying the way they operate on other worlds is a major goal of planetary exploration. Mars, Venus, and Titan all have (or had) active geology, hydrology, and weather -- but, as far as we know, they don't have life. Is Earth really that unique? Are we truly alone in the universe? We won't know unless we keep searching.

News from Earth

Science Against the Storm

Posted by Bill Dunford on 2013/11/11 09:07 CST

In the face of disaster, the search for answers and ways to help continues, on the ground and in space.

Read More »

The solar eclipse in Africa seen from space

Posted by Vitaliy Egorov on 2013/11/05 11:35 CST

On Sunday, the shadow of the Moon passed across Africa and the Atlantic Ocean. This was the last solar eclipse of the year. The Elektro-L satellite was able to observe the eclipse, and we can see the darkness of the lunar shadow covering Africa.

Read More »

Juno is in Safe Mode again, but still okay

Posted by Emily Lakdawalla on 2013/10/16 06:59 CDT | 6 comments

After entering safe mode last week during its Earth flyby, Juno returned to normal operations and downlinked all engineering and science instrument data. It entered safe mode again on Sunday night, but it is expected to re-resume normal operations late next week.

Read More »

Items 25 - 27 of 95  Previous12345678910Next

Earth's Place in Space

A Pale Blue Dot

Look again at that dot. That's here. That's home. That's us. On it everyone you love, everyone you know, everyone you ever heard of, every human being who ever was, lived out their lives.

More »

Pictures of Earth by Planetary Spacecraft

Many solar system explorers take dramatic photos of Earth as they depart, or fly by; some even have photographed Earth from the vantage point of another planet.

More »

The state of Earth observation, January 2012

As of November 2011, the Earth Observing Handbook counts 109 active missions to study the Earth as a planet, with 112 more approved and planned for the future. Jason Davis provides an overview of key current and upcoming earth-observing missions.

More »

Facebook Twitter Email RSS AddThis

JOIN THE
PLANETARY SOCIETY

Our Curiosity Knows No Bounds!

Become a member of The Planetary Society and together we will create the future of space exploration.

Join Us

Infinite Visions

Are you a #SpaceFan?

We have infinite visions, but together, we share one powerful voice as The Planetary Society. Share your vision using #SpaceFan.

View Responses

Space in Images

Pretty pictures and
awe-inspiring science.

See More

Join the New Millennium Committee

Let’s invent the future together!

Become a Member

Connect With Us

Facebook! Twitter! Google+ and more…
Continue the conversation with our online community!