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How two intruders from interstellar space are upending astronomy
Nature ^ | 20 Nov, 2019 | Alexandra Witze

Posted on 11/21/2019 7:35:30 PM PST by MtnClimber

click here to read article


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To: ZOOKER

21 posted on 11/21/2019 8:40:13 PM PST by BenLurkin (The above is not a statement of fact. It is either opinion or satire. Or both.)
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To: Larry Lucido

22 posted on 11/21/2019 8:50:31 PM PST by BenLurkin (The above is not a statement of fact. It is either opinion or satire. Or both.)
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To: DoodleBob

WAr of the worlds, Invasion of Democrat body snatchers.


23 posted on 11/21/2019 9:19:05 PM PST by lavaroise
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To: MtnClimber
From the article:

"Just three weeks after 2I/Borisov was first seen, astronomers trained the 4.2-metre William Herschel Telescope in Spain’s Canary Islands on it and spotted molecules of cyanide gas streaming off the comet. It was the first-ever detection of gas from an alien visitor to the Solar System."
Has Congressfume Eric Foulsmell been spotted anywhere in the vicinity of this comet?


       

24 posted on 11/21/2019 9:24:07 PM PST by Songcraft
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To: MtnClimber
...The object got kicked out of its own neighbourhood by a violent gravitational push...

There is no such thing as a "gravitational push" -- gravity is only an attractive force. A "pull" if you will.

25 posted on 11/21/2019 9:40:21 PM PST by CurlyDave
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To: CurlyDave
Orbital Mechanics – Hohmann Interplanetary Trajectories and Gravity Assists

Neighborly Rendezvous

Traveling to other planets is just like rendezvousing with another spacecraft in a different orbit, because that is exactly what you are doing. The interplanetary spacecraft is moving from Earth’s orbit to, say, Mars’ orbit, to rendezvous with the red planet. In traveling to Mars, the spacecraft is moving to a higher orbit. Remember from Orbital Mechanics part 1, to raise the apogee of an orbit, we fire the engines at perigee. On a Mars mission, Earth orbit is the perigee—but since we are leaving the home planet and moving into solar space, it is now called perihelion. Mars’ orbit is aphelion. A Hohmann Transfer Orbit trajectory does the job nicely, with the engines fired in the direction of Earth’s movement in it’s’ orbit.

26 posted on 11/21/2019 9:49:33 PM PST by spokeshave (If anything, Trump is guilty of attempting to obstruct injustice.)
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To: spokeshave

If the object in question has engines they can push it, but all gravitational interactions are from attraction (pulls), even the “sling-shot”.


27 posted on 11/21/2019 10:03:49 PM PST by CurlyDave
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To: DoodleBob

There he is!


28 posted on 11/21/2019 10:22:37 PM PST by jmacusa ("If wisdom is not the Lord, what is wisdom?)
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To: MtnClimber

It’s most likely coming from Mars. Varlock The Vicious Supreme Ruler of Mars is not amused.


29 posted on 11/21/2019 10:24:51 PM PST by jmacusa ("If wisdom is not the Lord, what is wisdom?)
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To: cloudmountain

Do you know who The Beatles were? It’s a Beatles song.


30 posted on 11/21/2019 10:25:58 PM PST by jmacusa ("If wisdom is not the Lord, what is wisdom?)
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To: CurlyDave

For every instance of positive gravitational attraction there is an instance of negative gravitational repulsion. This has been true like forever.


31 posted on 11/21/2019 10:48:07 PM PST by steve86 (Prophecies of Maelmhaedhoc O'Morgair (Latin form: Malachy))
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To: fieldmarshaldj

Thx.

http://www.freerepublic.com/tag/comet2iborisov/index

http://www.freerepublic.com/tag/2iborisov/index


32 posted on 11/22/2019 5:10:26 AM PST by SunkenCiv (Imagine an imaginary menagerie manager imagining managing an imaginary menagerie.)
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To: MtnClimber

Rendezvous with Rama
https://en.wikipedia.org/wiki/Rendezvous_with_Rama


33 posted on 11/22/2019 9:31:45 AM PST by minnesota_bound (homeless guy. He just has more money....)
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To: jmacusa
Yeah, I was around with Beatle mania. I stopped liking rock and roll--any kind--by the time I was thirty. In 100 years, 500 years, whatever, no one will remember them. They will be a blip in time.

The composers that are remembered are the CLASSICAL composers. Their music is still being performed and will be performed in 100 years, 500 years, whatever.

My tastes changed from the time I was 16 years old.
I also love opera. Not all opera is good but what IS still around is fabulous. If it weren't it wouldn't be performed.

The classical composers also wrote some TERRIBLE music and operas. But those dogs bit the dust a long time ago, as they should have, and what is left is the best of the best.

34 posted on 11/22/2019 9:23:22 PM PST by cloudmountain
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To: cloudmountain

The only two forms of music I don’t like are jazz and rap. Rap isn’t music, it noise. Oddly enough though I took lesson from one of the premier jazz drummers ever, the late Joe Morello.


35 posted on 11/22/2019 10:00:31 PM PST by jmacusa ("If wisdom is not the Lord, what is wisdom?)
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To: jmacusa
The only two forms of music I don’t like are jazz and rap. Rap isn’t music, it noise. Oddly enough though I took lesson from one of the premier jazz drummers ever, the late Joe Morello.

I liked jazz when I was much younger but it got WAY OUT THERE for me. I didn't "get it" anymore. The only name I can even remember in that genre is John Coltrane.

You are correct: rap isn't music. It's talking to a rhythm. Nothing more.
Rhyming isn't difficult. Even children can do that.

36 posted on 11/23/2019 4:42:52 PM PST by cloudmountain
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