Earth, our home planet, is a world unlike any other. The third planet from the sun, Earth is the only place in the known universe confirmed to host life. With a radius of 3,959 miles, Earth is the ...

This gravity disparity is largely due to that equatorial bulge creating non-uniform distances from points on the planet's surface to center of the Earth, and to the fact that the Earth spins.

But true stewards of the planet inspire people outside the family to keep the Earth clean. Start by helping your kids organize a weekly or monthly Garbage Club. Talk through who to recruit—and ...

The Earth formed over 4.6 billion years ago out of a mixture of dust and gas around the young sun. It grew larger thanks to countless collisions between dust particles, asteroids, and other growing ...

the Red Planet. Mars is most like Earth. Both have valleys and mountains, weather and seasons, ice caps and volcanoes. Robotic vehicles called rovers have been sent to Mars to collect information.

Deforestation is a very destructive process that threatens the health of our planet and its inhabitants ... Rainforests in these regions cover just 2% of Earth's total surface area and yet ...

Thirty years after the discovery of the first exoplanet, we detected more than 7000 of them in our Galaxy. But there are still billions more to be discovered! At the same time, exoplanetologists have ...

Curious Kids is a series for children ... @theconversation.com. Why do some planets have moons and some don’t? – Siddharth, ...

Computer simulations suggest that there is an undiscovered Earth-like planet lurking in the distant ... [+] Kuiper Belt, well past the orbit of Neptune (artistic illustration). There may be an ...