Scientists have detected a mysterious darkish spot on Neptune from Earth for the primary time.

The massive, darkish space is inside Neptune's environment and subsequent to an surprising, smaller vivid spot, specialists have stated.

Spots are frequent on big planets - essentially the most well-known being Jupiter's Great Red Spot - however specialists say that is the primary time one has been seen on Neptune with a telescope from Earth.

They stay a thriller to astronomers, who're hoping the brand new discovery will present clues as to what causes them.

Michael Wong, a researcher on the University of California, stated: "This is an astounding enhance in humanity's potential to look at the cosmos.

"At first, we could only detect these spots by sending a spacecraft there, like Voyager.

"Then we gained the power to make them out remotely with Hubble. Finally, know-how has superior to allow this from the bottom."

A darkish spot was first found on Neptune by NASA's Voyager 2 in 1989, earlier than disappearing a couple of years later.

Patrick Irwin, professor on the University of Oxford and lead investigator of the examine, stated: "Since the first discovery of a dark spot, I've always wondered what these short-lived and elusive dark features are."

The scientists have seen the spot for themselves by utilizing the European Southern Observatory's (ESO) Very Large Telescope (VLT).

The researchers used knowledge from the VLT to rule out the likelihood that darkish spots are brought on by a clearing within the clouds.

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Their analysis, printed in Nature Astronomy, started after NASA and the European Space Agency's Hubble Space Telescope found a number of darkish spots within the planet's environment, together with one in Neptune's northern hemisphere in 2018.

They've been in a position to be taught extra by splitting the daylight mirrored from the planet and observations recommend the pure phenomena may very well be brought on by air particles darkening as ice and hazes combine in Neptune's environment.

The spectrum technique astronomers used helped them decide how excessive the present darkish spot sits within the environment, in addition to revealing the chemical composition of various layers in Neptune's environment.

The observations additionally provided up a shock end result - a uncommon deep vivid cloud sort that had by no means been recognized earlier than, even from house.

This uncommon cloud sort appeared as a vivid spot proper beside the bigger primary darkish spot.