APOD: 50 Light-years to 51 Pegasi (2021 Oct 09)

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APOD Robot
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APOD: 50 Light-years to 51 Pegasi (2021 Oct 09)

Post by APOD Robot » Sat Oct 09, 2021 4:06 am

Image 50 Light-years to 51 Pegasi

Explanation: It's only 50 light-years to 51 Pegasi. That star's position is indicated in this snapshot from August, taken on a hazy night with mostly brighter stars visible above the dome at Observatoire de Haute-Provence in France. Twenty-six years ago, in October of 1995, astronomers Michel Mayor and Didier Queloz announced a profound discovery made at the observatory. Using a precise spectrograph they had detected a planet orbiting 51 Peg, the first known exoplanet orbiting a sun-like star. Mayor and Queloz had used the spectrograph to measure changes in the star's radial velocity, a regular wobble caused by the gravitational tug of the orbiting planet. Designated 51 Pegasi b, the planet was determined to have a mass at least half of Jupiter's mass and an orbital period of 4.2 days, making it much closer to its parent star than Mercury is to the Sun. Their discovery was quickly confirmed and Mayor and Queloz were ultimately awarded the Nobel Prize in physics in 2019. Now recognized as the prototype for the class of exoplanets fondly known as hot Jupiters, 51 Pegasi b was formally named Dimidium, latin for half, in 2015. Since its discovery, over 4,000 exoplanets have been found.

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orin stepanek
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Re: APOD: 50 Light-years to 51 Pegasi (2021 Oct 09)

Post by orin stepanek » Sat Oct 09, 2021 12:03 pm

peg51_desmars_ex1024.jpg
.05 AU; Oh so very very close to it's sun! Don't go there! :mrgreen:
Hot; 'hot; hot!
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Smile today; tomorrow's another day!

Sa Ji Tario

Re: APOD: 50 Light-years to 51 Pegasi (2021 Oct 09)

Post by Sa Ji Tario » Sat Oct 09, 2021 3:18 pm

The news always cause doubts and this suffered the same thing, it was thought that it was very shocking to be credible, but soon after it was repeated and became common, now it is only necessary to say that an E-mail was received from the planet XKZ-21- B, celebrating the new cosmic brotherhood.-
If communications continue like the current one, we must wait for the answers in the time that separates us in LA. A Next Cen 4.2 years out and another equal time back to this planet of the day are 100 years between saying Hello! and wait for your response.
But according to the theory that says if a particle in one part of the Universe moves in a way in another part so remote that it is not known if it exists, another affine particle will also move to respond to induction. Some higher intelligence can use that as "repeaters" throughout the Cosmos and thus communications will be instantaneous (as it occurs to me with the prolonged effect of the beers)

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neufer
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Buddy Holly & The Crickets "Peggy Sue" on December 1, 1957.

Post by neufer » Sat Oct 09, 2021 5:53 pm

Sa Ji Tario wrote:
Sat Oct 09, 2021 3:18 pm

The news always cause doubts and this suffered the same thing, it was thought that it was very shocking to be credible, but soon after it was repeated and became common, now it is only necessary to say that an E-mail was received from the planet XKZ-21- B, celebrating the new cosmic brotherhood. If communications continue like the current one, we must wait for the answers in the time that separates us in LA.
Click to play embedded YouTube video.
:arrow: We attempted communications ~64 years ago but all they were able to hear was Crickets.
Art Neuendorffer

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Re: APOD: 50 Light-years to 51 Pegasi (2021 Oct 09)

Post by farlightteam » Tue Oct 12, 2021 12:33 pm

Algo impactante,