At the aphelion, the distance from the Earth’s center to the Sun’s center is going to be 152,087,738 kilometers (94,502,939 ...

The sun will reach its most northern point on June 20, marking the start of the summer season in the Northern Hemisphere.

The rotational axis of the Earth, for example, is tilted 23.45 degrees from the plane of its orbit around the Sun. That’s the reason for the seasons.

Why is space debris a problem? There are roughly 1.1 million debris fragments larger than 0.04 inches and about 40,500 fragments larger than 4 inches in orbit according to the ESA.

SpaceX’s upcoming private mission will venture out to a polar orbit around Earth. Fram2, named in honor of the original ship that reached both Earth’s Arctic and Antarctic regions, is set for ...

Earth’s atmosphere doesn’t suddenly give way to the vacuum of space, but gets dramatically thinner at a point known as the Kármán line, roughly 100 kilometers up.

Climate change is already causing all sorts of problems on Earth, but soon it will be making a mess in orbit around the planet too, a new study finds. Researchers at the Massachusetts Institute of ...

Earth’s orbit is filling up with junk. Greenhouse gases are making the problem worse. By the end of the century, a shrinking atmosphere could create a minefield for satellites.

During different points of Earth's orbit, different parts of the planet are tilted toward or away from the Sun (because of that 23.5 degree tilt), leading to variations in how much sunlight they get.

Earth rotates on its axis — this has an angle which determines the plane of our planet’s orbit around the sun. In one configuration, when the Northern Hemisphere is more faceup towards the sun ...

A space-debris hit to space shuttle Endeavour’s radiator, found after one of its missions. NASA Earth's orbit is so crowded with junk now that roughly 1,000 warnings about possible impending ...

The surge in satellites and space debris is turning low Earth orbit into a hazardous zone. Without global cooperation, vital technologies and future space exploration face unprecedented risks.