Credit: Kinga Krzeminska/Getty Images The equator is the imaginary line that horizontally encircles the middle of Earth, stretching approximately 24,900 miles (40,000 kilometers) long. It's ...

To operate correctly, a compass must be held relatively parallel to the surface of the Earth, to align the needle with the magnetic fields. The video in the social media post argues that a line ...

But to earn their astronaut wings, high-flying civilians will have to make it past the so-called Kármán line. This boundary sits some 62 miles (100 kilometers) above Earth’s surface ...

Jess Thomson is a Newsweek Science Reporter based in London UK. Her focus is reporting on science, technology and healthcare. She has covered weird animal behavior, space news and the impacts of ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The sun has just unleashed its most powerful solar flare this cycle, a colossal X-class ...

However, it's rare to see so many of them so close together — and forming such a regimented line, according to NASA's Earth Observatory. You may like 'Above normal' conditions could bring as ...