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WHY JUPITER'S GREAT RED SPOT IS VANISHING

How It Works UK

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Issue 179

Jupiter’s complex weather system is sapping its famous red spot at an alarming rate. And scientists predict the feature could vanish within our lifetimes

- COLIN STUART

WHY JUPITER'S GREAT RED SPOT IS VANISHING

One of the Solar System’s most iconic features may be on the way out. Astronomers using the Hubble Space Telescope recently measured Jupiter’s Great Red Spot and found its diameter to be the lowest ever recorded. If it continues shrinking at its present rate, it could be gone within two decades.

The Great Red Spot is an anti-cyclonic (anti-clockwise) storm in Jupiter’s southern hemisphere and is large enough to contain three Earths. With winds raging at 270 miles per hour, it’s one of the fiercest storms in the Solar System. It’s possible that it was first observed as far back as the 1630s, not long after the invention of the telescope. However, accurate measurements of its size began in the late 1800s. At that point astronomers noted its diameter as 25,500 miles. By the time NASA’s Voyager space probes sidled up to Jupiter in 1979, the spot had shrunk by almost a half. And early Hubble images taken in 1995 revealed it had withered to just 13,020 miles.

How It Works UK'den DAHA FAZLA HİKAYE

How It Works UK

How It Works UK

UNCANNY'S DANNY ROBINS

The creator and host of the BBC's Uncanny series tells us about his most chilling experiences while researching the show, and writing a ghost book for children

time to read

4 mins

Issue 208

How It Works UK

How It Works UK

HOW FEATHERS GROW

A bird's proteinaceous plumage comes from the same source as our hair

time to read

1 mins

Issue 208

How It Works UK

How It Works UK

New EV battery technology could power 500-mile road trips on a 12-minute charge

Scientists have used a neat chemistry trick to tackle a major challenge facing future batteries.

time to read

2 mins

Issue 208

How It Works UK

How It Works UK

HOW AIR PURIFIERS WORK

These filtration devices clean a room's air of particles that can make a person sick

time to read

1 min

Issue 208

How It Works UK

How It Works UK

Chinese scientists hunt for alien radio signals in a 'potentially habitable' star system

TRAPPIST-1 is a red dwarf star located about 40 light years away that hosts seven Earth-sized rocky planets, with at least three orbiting in the habitable zone where liquid water could exist.

time to read

2 mins

Issue 208

How It Works UK

How It Works UK

WHAT HAPPENS WHEN WE DIE?

Our bodies are vessels for life, but in death they undergo a cascade of chemical and biological changes

time to read

3 mins

Issue 208

How It Works UK

How It Works UK

WHY ARE KEYBOARDS QWERTY?

There's a reason why this seemingly random arrangement of letters is widely used on keyboard layouts

time to read

1 min

Issue 208

How It Works UK

How It Works UK

A 'quasi-moon' discovered in Earth orbit may have been hiding for decades

A new paper describes a possible 'quasi-moon' of Earth, an interloping asteroid that may have been following our planet around for decades, undetected.

time to read

1 mins

Issue 208

How It Works UK

How It Works UK

WHAT'S AN ANTI-DRONE GUN?

How these devices intercept and disable unmanned aerial vehicles

time to read

1 mins

Issue 208

How It Works UK

How It Works UK

Dozens of mysterious blobs discovered inside Mars may be 'failed planets'

Giant impact structures, including the potential remains of ancient ‘protoplanets’, may be lurking deep beneath the surface of Mars.

time to read

2 mins

Issue 208

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