Saturday, November 20, 2021

December 2021 celestial events: How to see 3 planets in the evening twilight

December 2021 celestial events: How to see 3 planets in the evening twilight

Before the year ends, sky-gazing enthusiasts will be able to marvel at three bright planets as they twinkle in the twilight next to a crescent Moon .

In December, Jupiter, Saturn, and Venus will shine bright in the evening skies as they shift more towards the west. The planets will appear briefly after sunset, as the Moon does a brief celestial tour of the three planets.

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Publisher: Inverse
Twitter: @inversedotcom
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Hubble Space Telescope drops dazzling new views of the outer planets - CNET

Hubble's 2021 portraits of the outer planets show changes in the atmospheres of Jupiter (left), Saturn (upper right), Uranus (middle) and Neptune (lower right).

Hubble, a joint project of NASA and ESA, annually monitors the outer planets so scientists can track weather and atmospheric changes over time. The images are part of the Outer Planets Atmospheres Legacy program (OPAL) and were taken in September and October.

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Publisher: CNET
Author: Amanda Kooser
Twitter: @CNET
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NASA's Webb Space Telescope Primed To Reveal Secrets of Galaxy's Most Mysterious Planets

Illustration showing what exoplanet GJ 1214 b could look like based on current information. GJ 1214 b, a warm sub-Neptune-sized exoplanet roughly 48 light-years from Earth, is one of the most studied exoplanets in the galaxy.

Detailed atmospheric studies will provide key insights into some of the most common – and mysterious – planets known in the galaxy.

Publisher: SciTechDaily
Date: 2021-11-19T02:32:15-08:00
Author: Mike O
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Eggshell Planets Have a Thin Brittle Crust and No Mountains or Tectonics - Universe Today

Planets without plate tectonics are unlikely to be habitable. But currently, we’ve never seen the surface of an exoplanet to determine if plate tectonics are active. Scientists piece together their likely surface structures from other evidence.

The number of classifications for exoplanets can be as granular as we’d like. Ultimately, each one is different. We’re in the early stages of understanding the variety of exoplanet types, and eventually, a comprehensive classification scheme will emerge.

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Publisher: Universe Today
Date: 2021-11-18T13:14:59-05:00
Author: https www facebook com evan gough 3
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New Method To Detect Tatooine-Like Planets Proves Successful

Artist’s rendition of the Kepler-47 circumbinary planet system with its three planets. Credit: NASA/JPL-Caltech/T. Pyle

A new technique developed in part by University of Hawaiʻi astronomer Nader Haghighipour has allowed scientists to quickly detect a transiting planet with two suns.

Publisher: SciTechDaily
Date: 2021-11-17T08:09:28-08:00
Author: Mike O
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Maybe There's No Way to Tell if Habitable Planets Orbit Proxima Centauri... Yet!

Our closest stellar neighbor is Proxima Centauri, an M-type (red dwarf) star located over 4.24 light-years away (part of the Alpha Centauri trinary system).

The people responsible for the discovery were Guillem Anglada-Escudé and a team of astronomers from the Pale Red Dot campaign.

This method consists of observing the spectra of stars for signs of “wobble,” where the star is moving closer and farther away from Earth. This is caused by the gravitational influence of planets that orbit the star, the extent of which is used to infer the mass of the planets.

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Publisher: Universe Today
Date: 2021-11-17T17:36:39-05:00
Author: https www facebook com Storiesbywilliams 205745679447998 ref hl
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If Planet B exists, what might it be like? - CNN
Publisher: CNN
Date: 2021-11-19T16:34:28Z
Author: Ashley Strickland CNN
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Correction for Hammond et al.
Publisher: PNAS
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