NASA has captured summer on Saturn in an amazing snapshot released today taken by the the Hubble Space Telescope — which also reveals an icy blue southern pole.
The stunning shot — which shows how the gas giant’s bands appear more red in the increased levels of sunlight — was taken by the orbiting observatory on July 4, 2020.
Astronomers said that Saturn’s rings — seen from a distance of 839 million miles from Earth — are so bright in the image that they look like ‘freshly fallen snow’.
NASA has captured summer on Saturn in an amazing new snapshot, pictured, taken by the the Hubble Space Telescope — which also reveals an icy blue southern pole
Two of Saturn’s icy moons are also clearly visible in the exposure — tiny Mimas on the right of the image and icy Enceladus at bottom.
Saturn’s atmosphere — which is primarily made up of hydrogen and helium, with traces of ammonia, hydrocarbons, methane and water vapour — give the planet its yellowish-brown colour.
However, the reddish haze seen over the northern hemisphere in the image suggests that the summer months may change the amount of photochemical haze produced — or alternatively alter the atmospheric circulation and remove ice from aerosols.
NASA experts also noted the south pole in the image — which sports a blue hue — reflecting changes in Saturn’s winter hemisphere.
‘It’s amazing that even over a few years, we’re seeing seasonal changes on Saturn,’ said planetary scientist Amy Simon of NASA’s Goddard Space Flight Center in Greenbelt, Maryland.
Researchers from NASA said that the reason why Saturn has concentric rings — which are made out of pieces of ice ranging in size from tiny grains up to giant boulders — remains a mystery.
Convention argues that the rings are around four billion years old — like the planet itself — although a competing theory has proposed instead that the rings formed just a few hundred million years ago.
The stunning shot — which shows how the gas giant’s bands appear more red in the increased levels of sunlight — was taken by the Hubble Space Telescope, pictured, on July 4, 2020
‘NASA’s Cassini spacecraft measurements of tiny grains raining into Saturn’s atmosphere suggest the rings can only last for 300 million more years,’ said astronomer Michael Wong of the University of California, Berkeley.
This, he added, ‘is one of the arguments for a young age of the ring system.’
This image was taken as part of the Outer Planets Atmospheres Legacy project, which aims to develop our understanding of the atmospheric dynamics and evolution of the gas giants in our solar system.
In fact, the recent Hubble snapshot revealed a number of small atmospheric storms — temporary features which are seen to come and go each time the telescope is annually trained on Saturn.
NASAs Hubble Space Telescope is still working and has made more than 1.3 million observations since its mission began in 1990
The Hubble telescope was launched on April 24, 1990, via the space shuttle Discovery from Kennedy Space Centre in Florida.
It is named after famed astronomer Edwin Hubble who was born in Missouri in 1889.
He is arguably most famous for discovering that the universe is expanding and the rate at which is does so – now coined the Hubble constant.
The Hubble telescope is named after famed astronomer Edwin Hubble who was born in Missouri in 1889 (pictured)
Hubble has made more than 1.3 million observations since its mission began in 1990 and helped publish more than 15,000 scientific papers.
It orbits Earth at a speed of about 17,000mph (27,300kph) in low Earth orbit at about 340 miles in altitude.
Hubble has the pointing accuracy of .007 arc seconds, which is like being able to shine a laser beam focused on Franklin D. Roosevelt’s head on a dime roughly 200 miles (320km) away.
The Hubble telescope is named after Edwin Hubble who was responsible for coming up with the Hubble constant and is one of the greatest astronomers of all-time
Hubble’s primary mirror is 2.4 meters (7 feet, 10.5 inches) across and in total is 13.3 meters (43.5 feet) long – the length of a large school bus.
Hubble’s launch and deployment in April 1990 marked the most significant advance in astronomy since Galileo’s telescope.
Thanks to five servicing missions and more than 25 years of operation, our view of the universe and our place within it has never been the same.
Source: Daily Mail |NewsColony