The Sun is the brightest thing around, but there’s still quite a lot we don’t know about it since we can only get so close. However now, NASA’s Parker Solar Probe has gotten closer than other manmade ...

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

Earth" planet named HD 20794 d, located 20 light-years away, which could have conditions suitable for life.

Arianespace called off the second-ever launch of the Ariane 6 heavy-lift rocket today due to an issue with ground equipment.

Experts say open areas away from urban light pollution may offer the best possibilities for viewing the seven-planet ...

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

Earth emerged from the last ice age around 11,700 years ago. A new analysis suggests the next one could be expected in 10,000 ...

Venus, Mars, Jupiter, Saturn, Uranus, and Neptune were already visible in the night sky after dusk this month, but Mercury joined them on Feb. 28. While it's common to see a few planets line up in the ...

While all seven planets could appear in some form in parts of the U.S., not all of them will be visible to the naked eye. Here's what to know.

Stargazing is a bit of a tradeoff this month. The bad news is that sunsets in March are progressively later, and Daylight ...

It has been assumed that changes in the Earth's orbit around the sun are responsible for the ice age cycles. It is now clear ...

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