Do the periods of comets decrease because they lose mass every time they get near the Sun? Robert BaileyConover, Wisconsin ...

Venus and Saturn will be in conjunction this weekend, appearing side by side in the night sky during January's post-sunset ...

In the photo from the space station, the comet is captured just above Earth’s horizon, which is illuminated by a bright light ...

I pick out North America’s celestial highlights for the week ahead (which also apply to mid-northern latitudes in the ...

Astronomer Dean Regas gives us the lowdown on the best things to look out for this winter, from a “planet parade” to the ...

Both Venus and Saturn will be in the Aquarius constellation, the water bearer, during their close approach. To help spot it, ...

Plus: Saturn’s moon Iapetus is visible, our Moon passes the bright star Spica, and Mars skims south of Pollux in Gemini in ...

On Monday night you may have a chance to witness the moon obscuring the Red Planet at its brightest, as well as a comet’s ...

NASA and famed astronaut Buzz Aldrin say stargazers have the best chance of catching a glimpse of Saturn and Venus in ...