The four planets will be visible just before sunrise on the eastern horizon. Stellarium. The optimal time to view it depends ...

On April 18, Mercury, Mars, Saturn, and Neptune align in the sky, but it might be hard to Tennesseans to spot. Here is what ...

For several days this month, Saturn, Mars, and Mercury appear just degrees apart before sunrise—close enough to watch their ...

It’s a virtual mission to Mars. Our first mission to Mars may still be a ways off, but people can take a virtual tour of the Red Planet thanks to a brand new video by the Mars Express Orbiter. People ...

Stargazers looking for more to do in April have a few more things coming, including a planet parade where four planets -- ...