The remark about Copernicus is rather ironic, for he was the man who pushed hard for placing the sun and not the Earth at ...

Turns out, it's as tough to drop inward into the inner solar system, as it is to head outward. The problem stems from losing ...

If you can find a view low to the western horizon on Monday, March 10, you may see a rare conjunction between Venus and ...

Prior to 2040, the last planetary quintuplet occurred in the year 1186, and according to Uptain, records show that the close ...

Also in the morning sky is little Mercury, but traditionally for Northern ... so), it's positioned on the far side of the sun as seen from Earth and through telescopes its disk appears quite ...

The first Mercury retrograde of the year goes from Saturday, March 15 to Monday, April 7. Retrogrades are optical illusions ...

You may already know that Mercury retrogrades — which occur when the messenger planet appears to move backward from our vantage point on Earth ... you might not see major forward movement ...

See Richard Meagher's full Q&A » For geneticist ... He can no longer eat the fish he catches from the lake near his home in Georgia. Mercury from industry has seeped into its waters.

Mercury can be easily spotted from Earth when the planet appears to be at its farthest distance from the sun, NASA said. This happens about every four months. Stargazers will be able to see ...

Mercury ' s inner core is solid and about the same size as Earth ' s inner core, a new study using observations from NASA's MESSENGER mission has indicated. Mercury is the smallest planet in our ...