In a event that won't be seen again until the year 2040, seven planets will align in the sky at the same time on 28 February ...

Mars, Venus, Jupiter and Saturn should be visible to the naked eye, but with a telescope you can spot Neptune and Uranus.

Mars will appear to make an ultraclose approach to the moon on Sunday, after Jupiter had a turn earlier this week. Here's how ...

The moon's ascending node (the point in the sky where its orbit crosses the ecliptic from south to north) is moving westward ...