يحاول ذهب - حر
Is Voyager 1 in interstellar space now?
Issue 203
|How It Works UK
Yes. After a 47-year journey out of the Solar System, Voyager 1 has left the heliosphere - the region dominated by particles flowing out from the Sun in the solar wind.
-

Scientists think it achieved this landmark around August 2012, when its detectors began to pick up increasing numbers of cosmic rays, which are high-speed particles from distant stars and galaxies. This indicates that it has crossed the heliopause - the boundary between the heliosphere and the interstellar medium – and is now drifting through a turbulent region just beyond the Sun's protective bubble.

The International Union for the Conservation of Nature (IUCN) maintains a 'Red List' of the world's endangered species. There are seven categories that range from Least Concern, through to Near Threatened, Vulnerable, Endangered, Critically Endangered, Extinct in the Wild and finally Extinct. Endangered species face a 'very high risk of extinction in the near future'. This takes into account the number of animals left, as well as their rate of decline and geographical distribution. Just under 170,000 of over 2 million known species are assessed each year. There are at least 38,500 species currently under threat, with over 16,300 considered endangered.

Judo was the first martial art to award a 'black belt', introduced by its founder Kanō Jigorō. He was inspired by Japan's high-school swimming, where advanced students wore black ribbons. The other colours were introduced as a motivation tool by Mikinosuke Kawaishi, and this became so successful that other styles followed.

هذه القصة من طبعة Issue 203 من How It Works UK.
اشترك في Magzter GOLD للوصول إلى آلاف القصص المتميزة المنسقة، وأكثر من 9000 مجلة وصحيفة.
هل أنت مشترك بالفعل؟ تسجيل الدخول
المزيد من القصص من 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
4 mins
Issue 208

How It Works UK
HOW FEATHERS GROW
A bird's proteinaceous plumage comes from the same source as our hair
1 mins
Issue 208

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.
2 mins
Issue 208

How It Works UK
HOW AIR PURIFIERS WORK
These filtration devices clean a room's air of particles that can make a person sick
1 min
Issue 208

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.
2 mins
Issue 208

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
3 mins
Issue 208

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
1 min
Issue 208

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.
1 mins
Issue 208

How It Works UK
WHAT'S AN ANTI-DRONE GUN?
How these devices intercept and disable unmanned aerial vehicles
1 mins
Issue 208

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.
2 mins
Issue 208
Listen
Translate
Change font size