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AP: First detection of extra-solar terrestial sized planet?

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17 years 7 months ago #45137 by pmgisme
Voyager 1 (the fastest ever spacecraft) is now travelling at 17.3 kilometers per second.

Escape velocity from Earth for any manned mission
is 11.186 kilometers per second.Minimum.

Go slower than that and you will fall back to Earth.

So the Apollo missions traveled at 64% of the Speed of the Voyager 1 today.

The distance Voyager 1 travels in 80,000
years would take a manned Apollo spacecraft 123,726 years.

The fastest ever manned spacecraft, (Apollo 13 as it plunged back into the earths atmosphere), was doing a lot more than escape velocity.

Peter.

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17 years 7 months ago #45139 by Frank Ryan
Brilliant! It was only a matter of time before they could detect the Earth sized planets. Far sooner than I thought they would actually. 'C' huh? Uhh OK
(or whatever number it is) whatever happened calling things names?
Who gets to decide?
I'd be pretty boring if all our modern day discoveries were just numbers.

My Astrophotography
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17 years 7 months ago #45140 by dmcdona
According the The Times, the fasted manned spacecraft (Apollo 10) travelled at 24,791 mph (11.08 km/s).

Presumably it travelled faster at take off to reach escape velocity. And presumably the Times refer to a sustained velocity.

Apollo 13 clearly finished its journey doing precisely 0 mph.

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17 years 7 months ago #45141 by dmcdona

Brilliant! It was only a matter of time before they could detect the Earth sized planets. Far sooner than I thought they would actually. 'C' huh? Uhh OK
(or whatever number it is) whatever happened calling things names?
Who gets to decide?
I'd be pretty boring if all our modern day discoveries were just numbers.


I'd vote for "Bob" :D

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17 years 7 months ago #45144 by Seanie_Morris

Brilliant! It was only a matter of time before they could detect the Earth sized planets. Far sooner than I thought they would actually. 'C' huh? Uhh OK
(or whatever number it is) whatever happened calling things names?
Who gets to decide?
I'd be pretty boring if all our modern day discoveries were just numbers.


I'd vote for "Bob" :D


Reminds me of the 1999 movie "Armageddon" when the hick hillbilly astronomer discovers the asteroid that would eventually be the mother of all asteroids. This is when he gets his discovery confirmed and he is on the phone (presumably with someone at the Minor Planet Centre? ;))

Hick: "The guy who finds it gets to name it, right?"
MPC: "Uh... yeah."
Hick: "I'd like to name it after my wife, Vera." (She looks at him with happy astonishment.) "....She's an evil, life-destroying bitch from whom there is no escape!"

Classic! :lol:

Midlands Astronomy Club.
Radio Presenter (Midlands 103), Space Enthusiast, Astronomy Outreach Co-ordinator.
Former IFAS Chairperson and Secretary.

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17 years 7 months ago #45145 by pmgisme
So we are all agreed that manned Apollo 10 would have reached that planet in 124,909 years.

Not 5 billion.

Peter.

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