The Blue Ghost lunar mission has captured a gorgeous image of Earth as it ramps up its journey toward the moon.

If you’ve got either of those, the blue-green planet will emerge after sunset to the upper left of Venus, in the south-southwest, and will set just before 10 p.m. Now, turn farther to your left ...

The North pole is at 4 o'clock. On its 84 Earth-years orbit of the sun, the blue-green planet Uranus—the third-largest planet in our solar system—is about 1.8 billion miles (2.9 billion ...

When thinking about the smartest beings on this blue/green planet of ours, insects probably aren’t the first things to come to mind. But listen – intelligence doesn’t always look the same ...

How did we get here? How have we ended up as the most advanced species on a small blue-green planet, orbiting a seemingly insignificant star, in one of the hundred billion galaxies in the Universe?

A distinctive blue and green image of Earth reveals our planet's most remarkable features. At 4.54 billion years old, our home world is a venerable object. But it was only with the arrival of the ...

The measurements that they took, the most precise ever of these moons, should help us to learn more about the path of these satellites and even about the internal structure of this blue-green planet ...

Summer is here, and while water enthusiasts and pets enjoy swimming and boating when the weather is calm and sunny, these conditions are also perfect for growing blue-green algae, which can be ...