All seven of the other planets in our solar system are about to become visible at once in a great planetary alignment – ...

Filmmaker Adam Nemoy helps celebrate the 90th anniversary of Pluto's discovery this month at the 6th annual 'I Heart Pluto' ...

There are eight planets in the solar system ... "One might think Mercury is very hot all the time because it's so close to the sun," Maria Vincent, an astronomer at the University of Hawaii ...

Four planets will be widely visible to the naked eye through part of February, but calling them a 'planetary alignment' may ...

Stargazers will be treated to a rare seven-planet alignment in February. This is what scientists hope to learn.

the closest point in the body's orbit to the sun. (The point at the end of the apsis is the aphelion). For some bodies, like all of the planets of the solar system, the difference between the ...

There will also be two total lunar eclipses that occur during the March and September full moon events. A lunar eclipse, ...

Like a celestial parade across the cosmos, five bright planets are lighting up the night sky and visible with the naked eye ...

Look up this week for February’s full snow moon and to catch the last glimpse of a visible parade of planets in the night sky ...