Hubble Spots Mysterious Vortex on Neptune

Posted June 24th, 2016 at 4:00 pm (UTC-4)
4 comments

This new Hubble Space Telescope image confirms the presence of a dark vortex in the atmosphere of Neptune. (NASA, ESA, and M.H. Wong and J. Tollefson (UC Berkeley))

This new Hubble Space Telescope image confirms the presence of a dark vortex in the atmosphere of Neptune. (NASA, ESA, and M.H. Wong and J. Tollefson (UC Berkeley))

NASA says images gathered by the Hubble Space Telescope, a little over a month ago, confirm the existence of a mysterious dark vortex in Neptune’s atmosphere.

While vortices on Neptune have been spotted several times before, dating back to the 1989 flyby of ‘Voyager 2’, this recent Hubble observation marks the first time the phenomenon has been seen in the 21st century.

The dark vortices, according to NASA, are actually weather related high-pressure systems that travel through Neptune’s atmosphere.

They’re known to travel with what are referred to as bright “companion clouds” that are probably made up of methane ice crystals.

Scientists believe that these clouds are created by gases that freeze when currents of air surrounding the vortices are disturbed and pushed above it.

Mike Wong a research astronomer from the University of California at Berkeley led the group of astronomers that made the discovery after analyzing data from the Hubble.

He said that Neptune’s dark vortices float through its atmosphere like “huge, lens-shaped gaseous mountains.”

Wong compared these companion clouds to flat (orographic) clouds that can form over mountains here on Earth.

Scientists say the size, shape and stability of Neptune’s dark vortices can change, and that they can wander in the atmosphere, traveling at speeds that can vary from slow to fast.

NASA says future observations and investigations could provide scientists with a better understanding of how the vortices are created, what causes them to drift through the atmosphere, their relationship with Neptune’s environment as well as what causes them to eventually disperse.

Astronauts took this photograph of the Hubble Space Telescope during the final space shuttle servicing mission in May 2009. (NASA)

Astronauts took this photograph of the Hubble Space Telescope during the final space shuttle servicing mission in May 2009. (NASA)

Meanwhile, the space agency says it has just extended a contract that makes it possible to continue the science operations of the Hubble Space Telescope for another five years to 2021.

This extension would allow a bit of an overlap in operations between the Hubble and its more sophisticated successor, the James Webb Space Telescope, which is scheduled for launch in 2018.

Rick Pantaleo
Rick Pantaleo maintains the Science World blog and writes stories for VOA’s web and radio on a variety of science, technology and health topics. He also occasionally appears on various VOA programs to talk about the latest scientific news. Rick joined VOA in 1992 after a 20 year career in commercial broadcasting.

4 responses to “Hubble Spots Mysterious Vortex on Neptune”

  1. Otoredi says:

    Is there any details about this subject in other languages?

  2. […] Hubble Spots Mysterious Vortex on Neptune […]

  3. […] Hubble Spots Mysterious Vortex on Neptune […]

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