What would Earth look like without water?
From marble blue to very, very brown.
Tag: earth
A Big Blue Marble. A History of Earth from Space
Over 70 years as humanity has begun to explore space, we have upon occasion, turned our gaze back to our ...
The Thickest Layer of the Earth
The mantle is a whopping 2,900 km (1,802 miles) thick, and it's by far the thickest layer of the Earth.
What’s the tallest mountain in the world? Hint: it’s not Mt. Everest
The Earth is not a perfect sphere, so the answer might surprise you.
Power lines over Lake Pontchartrain elegantly demonstrate the curvature of Earth
Set, Game, and Match, flat-earthers!
Earth’s oldest rock was actually found on the moon and brought home by Apollo 14
The rock was jettisoned to the moon when early Earth was pounded by daily meteorite impacts.
Earth’s inner core may actually be mushy
The planet's innermost layer is more like a soup than a brick.
Iconic photos of Earth taken by Apollo astronauts, digitally restored and in full glory
Some of the most iconic images of Earth from space have been brought to new light.
Why don’t satellites fall down from the sky?
They keep falling, but not down.
Several city- and state-sized asteroids impacted young Earth. Probably.
It's been so long since then that direct evidence simply isn't around any more.
How many Earths can you fit inside the sun?
You could fit nearly one million Earth-sized planets and the sun isn't even that big of a star.
Mars is also a wobbly planet like Earth, and we don’t know why
Maybe this discovery can help us understand them both.
Sea turtles are amazing navigators — but they only use crude maps
Sea turtles have an internal compass -- but it's not perfect. They can go the wrong way for hundreds of ...
Jupiter will be very bright and visible tonight, as it comes closest to Earth
It's going to be a good month for stargazers.
Seismic waves reveal surprisingly widespread blobs near the Earth’s core
Our planet's core might be pockmarked with hot blobs. We don't know what they are, we don't know where they're ...
Scientists have new evidence that Earth’s inner core may be rotating
It's the strongest evidence yet that Earth's inner core is rotating.
In the Earth’s core, it’s snowing iron
Seasonally appropriate news.
Exoplanets could have better conditions for life than Earth, study finds
"This is a surprising conclusion," the team admits.
Earth’s history gets rewritten by a single drop of water
The findings show that plate tectonics started 3.3 billion years ago, coinciding with the period when life started on Earth.
Humanity has already spent all of Earth’s environmental budget for 2019
Happy world overshoot day!