(via minutephysics) We think of the moon as orbiting the earth, following a spiraling trajectory as the earth itself orbits the sun. But this is wrong. Not only is the moon's orbit NOT a spiral ...

Even most rocket scientists would rather avoid hard math when they don't have to do it. So when it comes to figuring out ...

Everyone who has ever lived on Earth has been well-aware of the moon, but it turns out Earth also has some frequent temporary companions. These "quasi-moons" are small asteroids that enter into a kind ...

A small asteroid has been quietly following Earth’s orbit for decades—unseen, unbothered and, until recently, completely unknown. Astronomers have now confirmed the existence of 2025 PN7, a so-called ...

Earth has a newly discovered—albeit temporary—companion in its journey around the sun. In research published this month in Research Notes of the AAS, a non-peer reviewed publication from the American ...

To study the sun, scientists use a specialized telescope called a coronagraph. This instrument mimics a solar eclipse by using a occulting disk to block out the sun's bright light. By doing this, ...

An asteroid named 2025 PN7 will be sharing the Earth's orbit until 2083. Earth will have a visitor within its orbit for the next several decades, according to astronomers. An asteroid named 2025 PN7 ...