Neptune facts: Neptune's recent "Dark Spots"...observed by Hubble telescope

Image credit: Colorado Space News
Recently a Hubble Telescope discovered the full development (complete formation) of dark spots on Neptune surface for the very first time.

For the first time in 1989, NASA's Voyager 2 observed G.D.S-89 (the Great Dark Spot-89), which lasted for a short time period (vanished in 1994). And since then they are observed forming for the second time.

Image credit: Google Sites

Neptune is the farthermost accepted planet in our Solar System. It has 14 moons and completes one revolution around the sun in a rough time period of 165 years. Also known as an 'Ice Giant'

It's primarily comprised of hydrogen, helium and hydrocarbons. Scientists have also found that as the planet is fully comprised of ice so components such as water, ammonia, methane & probably nitrogen are also present.

Neptune's greatest distance from the sun (30.1 AU) makes it one of the coldest places in our solar system

Due to this Neptune has one of the most furious weather systems, where winds blow with speed of 2,100 km/hr.

This led to the formation of storms (anti-cyclonic system) on its surface, in fact, they can be of any sizes.

One observed in  1989 was of the size of the earth. In Neptune's atmosphere, the dark spots form in its troposphere (lower altitudes) while appearing as holes in higher clouds.

Image credit: Shooting Star Logbook

The dark spots are stable formations so they last for several months. They are also accepted as vortex structures.

This observing of dark spots on Neptune just like on Jupiter, has attracted the scientists' attention and Neptune is being observed regularly and by doing so they might get some sought of information with regard to the 'Dark spots'.  

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