Latest News About Neptune, the Mysterious Blue Planet
Neptune, the other blue planet, is the eighth planet in our solar system. Neptune is an ice giant.
The Hubble telescope photos show the most clouds on Neptune seen in years.
In late May and early June, the Moon will appear to dance from day to day with Jupiter, Mercury and Venus. This animation looks East at 5:00am from the U.S. East Coast. Viewers with telescopes can also spot Uranus, Neptune and Ceres in this ballet.
Skywatching tips for how you can view six planets aligned above the rising sun.
Here's a look at how to observe the planets of the solar system in 2011.
A list of skywatching events in January 2011 that you don't want to miss.
How to best observe the major planets of our Solar System. Some have worlds of their own.
Planetary scientist Alan Stern has been fighting for Pluto's planethood ever since the icy body was demoted to "dwarf planet" in 2006. He lays out the case for Pluto at SPACE.com.
The planet Neptune, eighth planet from the Sun in Earth’s solar system, is the fourth largest planet in diameter and third largest in mass. Neptune was named after the Roman God of the seas.
Astronomers searching for planets beyond our solar system could increase their odds of success by scrutinizing the dusty disks ringing faraway stars, a new study suggests.
Planet Neptune shouldn't have so active an atmosphere. And its big moon Trtion seems a close cousin of Pluto and other dwarf planets of the Kuiper Belt. What's going on out there?
See Neptune's moon Triton up close with new footage released from the 1989 flyby of the Voyager 2 probe.
A cache of 14 large space rocks beyond Neptune was recently discovered by astronomers searching through the archives of the Hubble Space Telescope.
On Aug. 20, Neptune will be in opposition, completing its first trip around the sun since its discovery in 1846. Seasoned skywatchers may be able to see Neptune during opposition as it completes its first orbit since its discovery.
Astronomers have discovered a new asteroid in a region of Neptune's orbit where no previous object was known to exist – a so-called gravitational "dead zone."
New measurements of Neptune's atmosphere from a European space telescope suggest that a comet may have impacted the outer-most planet in our solar system approximately two centuries ago.
A small space rock that orbits the sun from out beyond Neptune is almost completely coated in water ice, according to a new study.
A Neptune-sized planet orbiting another star has one odd atmosphere – analysis has shown that it lacks methane, a common ingredient for many planets in our solar system and a possible signature of life.
Cloud feature over Neptune's south pole is seen splitting in two, suggesting it could be similar to Saturn's polar vortex.