For example, Mercury, being closest to the sun, takes just 88 Earth days to complete one orbit. On the other hand, Neptune, ...

It is being called a "planetary parade" as seven planets are expected to be seen in the Earth's night sky on Friday, ...

Astronomers have discovered nearly 6,000 planets beyond our own solar system. Here's how — and how we'll find even more.

After Friday's spectacle, a "planet parade" of this size won't appear in the night sky for several years, experts say.

For a few evenings around 28 February, every planet in the solar system will be visible in the night sky, thanks to a rare ...

After Friday's spectacle, a "planet parade" of this size won't appear in the night sky for several years, experts say.

Earth's history is a roller-coaster of climate fluctuations, of relative warmth giving way to frozen periods of glaciation ...

Scientists have predicted future glacial periods by matching Earth's past ice ages to its orbit around the sun. But their new ...

Seven planets are on display in the night sky at the end of February, but some will be harder to spot than others. Here’s ...

"Such a parade happens from time to time, and we wish to share this event with our friends around the world," Masi said. Such an alignment happens when the planets orbit the sun on a relatively ...

Most of the planetary alignment, which is colloquially referred to as a planet parade, will be visible to the naked eye just after sunset Friday, according to Preston Dyches, writer and producer of ...