Science n space mysterious, learning about ghostly neutrinos
#31


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#32
11-12-2020 11:48 PM
teeth53 said:


https://www.bbc.com/future/article/20200...lar-system

What these two aging probes revealed about the boundary between the heliosphere and the interstellar medium has provided fresh clues about how our Solar System formed, and how life on Earth is even possible. Far from being a distinct boundary, the very edge of our Solar System actually churns with roiling magnetic fields, clashing stellar windstorms, storms of high energy particles and swirling radiation.

The size and shape of the heliosphere bubble alters as the Sun’s output changes, and as we pass through different regions of the interstellar medium. When the solar wind rises or falls, it changes the outward pressure on the bubble.
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#33
The mysterious dark vacuum of interstellar space is finally being revealed by two intrepid spacecraft that have become the first human-made objects to leave our Solar System.

https://www.bbc.com/future/article/20200...lar-system
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#34
6-4-2021 8:29 PM
teeth53 said:
The mysterious dark vacuum of interstellar space is finally being revealed by two intrepid spacecraft that have become the first human-made objects to leave our Solar System.

https://www.bbc.com/future/article/20200...lar-system
Largely because by keeping the interstellar medium at bay, the solar wind also keeps out a life-threatening bombardment of radiation and deadly high-energy particles – such as cosmic rays – from deep space. Cosmic rays are protons and atomic nuclei streaming through space at nearly the speed of light. They can be generated when stars explode, when galaxies collapse into black holes, and other cataclysmic cosmic events. The region outside our Solar System is thick with a steady rain of these light-speed subatomic particles, which would be powerful enough to cause deadly radiation poisoning on a less sheltered planet.

Our star’s gravity extends well beyond the heliosphere, holding in place a distant, sparse sphere of ice, dust, and space debris known as the Oort Cloud.

“Voyager definitively said that 90% of this radiation gets filtered out by the Sun,” says Jamie Rankin, a heliophysics researcher at Princeton University, and the first person to write a PhD thesis based on the Voyagers’ interstellar data. “If we didn’t have the solar wind protecting us, I don’t know if we’d be alive.”

Three additional Nasa probes will soon join Voyagers in interstellar space, although two have almost run out of power and stopped returning data. These few tiny pinpricks in the giant boundary will only provide limited information on their own. Fortunately, more expansive observation can be done closer to home.

Nasa’s International Boundary Explorer (Ibex), a tiny satellite that has orbited Earth since 2008, detects particles called “energetic neutral atoms” that pass through the interstellar boundary.
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#35
I feel " perhaps who knows thats the place we all will go once RIP another world, will we able to meet up our love ones who RIP before us ? "
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Researcher in Social Science + Politics
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#36
https://amp-scroll-in.cdn.ampproject.org...-star-trek

Closest star (solar system) to Earth is Proxima Centauri, about 4.25 light-years away or about 25 trillion miles (40 trillion km). The fastest-ever spacecraft, the now- in-space Parker Solar Probe will reach a top speed of 450,000 mph. It would take just 20 seconds to go from Los Angeles to New York City at that speed, but it would take the solar probe about 6,633 years to reach Earth’s nearest neighbouring solar system.

Some characters – like astronauts in the movies Interstellar and Thor – use wormholes to travel between solar systems in seconds. Another approach – familiar to Star Trek fans – is warp drive technology. Warp drives are theoretically possible if still far-fetched technology.
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#37
How one knows d destination is going to at another end of d wormhole if time travel is purported by it Thinking
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