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Nuclear blast sends star hurtling across galaxy

69 points| elorant | 5 years ago |bbc.com | reply

29 comments

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[+] ivalm|5 years ago|reply
900000 km/h = 250 km/s. This is fast but comparable to 224 km/s that the sun moves. Our galaxy itself moves at ~600 km/s relative to local cluster center of mass.
[+] jojobas|5 years ago|reply
The Sun is way slower in regards to neighboring stars. 250 km/s is an order of magnitude faster than Sun/Alpha Centauri relative speed.
[+] lmilcin|5 years ago|reply
Those speeds are not comparable.

If you search for high speed differences, you just look for far enough target.

It is much more impressive for any body to generate its own delta V than to follow an orbit.

This is the reason why you discuss cars moving at tens of meters per second forgetting that they are already moving at over 200km/s around our Galaxy. Because some reference frames just aren't interesting.

[+] Hongwei|5 years ago|reply
Imagine being on some planet far away, just living your life, and a literal star comes through and ends all life in the system.
[+] xwdv|5 years ago|reply
If the star is a direct hit on your planet, it would look as if a second sun was getting brighter and larger, and the heat so unbearable you’ll be dead before there’s any impact.
[+] pupdogg|5 years ago|reply
Everyone’s views in this discussion are really enlightening for someone like myself who has been consumed with nothing but programming the last few months! Miss being a kid and dreaming about space travel.
[+] alexfromapex|5 years ago|reply
Is that picture real? Drives me crazy seeing articles with stock art that might as well be completely fabricated
[+] Tagbert|5 years ago|reply
That looks like an illustration, not a photo
[+] Koshkin|5 years ago|reply
Question is, in what direction.
[+] henearkr|5 years ago|reply
Maybe an alien civilization just fired off this star for some gigantic war...
[+] steve76|5 years ago|reply
Something hot and bright far away emits photons. What are those? Heat transfer through the medium of time, right? A fast clock is bright and speeds up a slow clock that's dark.

What's the difference between a tiny spot on the Hubble, or any material for that matter, turning colder and darker always when pointed into that direction? Voltage spikes up at that sensor and it sees a hot spot because it caves in on itself instead of being hit with a beam of energy in motion for billions of years.

Weak force parity violation?

Is that just some higher abstraction on top of pair production and spontaneous particle creation?

Electromagnetism is the emission of photons and the absorption through the photovoltaic effect. Matter decay is mass decreasing and releasing energy without EM. Or EM plus negating the effect by messing with that EM counterbalance. Or gravity, the heat transfer through the medium of time, interaction so fine it looks like you are broadcasting to everything at once if something else tries to trace it.

That's what I'm thinking. Eventually spontaneous particle creation is the basis of all interaction. Not EM or photons. I think humans get to it, that we do it already. Massive celestial objects pop into existence because highly accurate sensors here on Earth say they must. Particles here pop into existence and they give the data of everything out there for no other reason than they must. Instead of being loss in a vast sea of stuff, the universe is a very complex filter to a massive energy source.

When they talk of causality violation, backwards time travel, I think of hitting the big bang itself, or original energy source. Throwing dynamite into the wave you're surfing on.

Forget worrying about a star crashing through Earth. Earth is the source of all destructive acts in the universe for the most trivial of reasons, and we have soverign access to all that out there to make our lives the slightest bit better for any reason.

Just some thoughts I get when I read these things. Thanks for that article.