Mercury reaches its greatest elongation, 26 degrees east of the sun on July 4. From latitude 40 degrees north, the ...

Artist's impression of Planet Nine – a suspected “wide-orbit” planet – with the Sun in the distance; Neptune's orbit is shown ...

"Its occurrence is like finding a tropical seed in Arctic ice – indicating either an unexpected local environment or ...

Mercury is the month's highlight, reaching greatest elongation July 4. Also on show in the Southern Hemisphere: Mars, Saturn, ...

The Owl Nebula is an example of a planetary nebula — a type of object that yields glimpses of stellar death in slow motion.

It is expected that the transit of Saturn will occur in the eighth house, which is located within the Solar System. Generally speaking ... That being said, except for Jupiter and Venus, most of the ...

Asteroids are usually grouped into three main types based on what they are made of: C-type, S-type and M-type.

The planet Jupiter has no solid ground – no surface, like the grass or dirt you tread here on Earth. There’s nothing to walk on, and no place to land a spaceship. But how can that be? If Jupiter doesn ...

Stars passing close to the sun could cause planets to collide, including with Earth, or even be ejected as rogue planets, new ...

Astronomers discovered that C/2014 UN271, a massive comet more than 10 times larger than any known comet, is emitting jets of ...

Read What are asteroids?Asteroids are rocky objects that orbit the Sun just like planets do. In fact, sometimes asteroids are ...

The Atacama Large Millimeter/submillimeter Array has detected methanol isotopes around a nearby star, which could help ...