Scientists have directly observed the rocky guts of exoplanets, which are worlds from different star systems, by watching the fallout of these objects crashing into the corpses of dead stars.
This mind-boggling technique has revealed that exoplanets are similar in composition to planets in our own solar system, implying that worlds like Earth may be plentiful in our galaxy, according to a study published on Thursday in Science .
"It's pretty cool because this is really the only way to measure the geochemistry of exoplanetary bodies directly," said lead author Alexandra Doyle, a graduate student of geochemistry and astrochemistry at UCLA, in a phone call.
Co-author Edward Young, a professor of geochemistry and cosmochemistry at UCLA, added that the study represents "the first time such an advanced way of looking at the geochemistry of these bodies has been used," in the same call.
Not to change the topic here:
Planet Sizes Matter for Habitability Too. - Universe Today
Without sufficient mass a planet won't have enough gravity to hold onto its water. A new study tries to understand how size affects the ability of a planet to hold onto its water, and as a result, its habitability.
The issue of what might make a planet habitable is an ongoing debate. Not only for exoplanets, but for some of the moons in our own Solar System's future! Videos for Earth - Like Planets May Be Common 0:47 Earth - Like Planets May Be Common In Universe: Study Dailymotion!! Scientists have a pretty good idea how much energy a planet needs to receive from its star to maintain liquid water! Earth-Like Planets May Be Common in Universe - msn.com www.msn.com /en-ae/news/other/ ...universe/ar...Earth - like planets may be common in the universe, a new UCLA study implies. The team of astrophysicists and geochemists presents new evidence that the Earth is not unique.!! That's given rise to the popular notion of the " Goldilocks Zone ," or the circumstellar habitable zone, a range of proximity that's neither too close nor too far from a star for liquid water to persist on a planet.
With the search for exoplanets in habitable zones ramping up, and as we get better telescopes and techniques to study exoplanets in greater detail, scientists need more constraints on what planets to spend observing resources on. As this paper shows, a planet's mass could be a useful filter.
A Churning 'Molten Blob' of Planet May Be Easier to Find. Here's Why. | Space
The smaller a planet , the more difficult it is to spot — which is frustrating for scientists hoping to find Earth-like worlds.
That's why a team of researchers set out to determine what planetary traits would make a world a little easier to identify! Earth-Like Planets May Be Common Outside Our Solar System ...our...Earth-Like Planets May Be Common Outside Our Solar System , Scientists Discover - Tech A Peek Scientists have directly observed the rocky guts of exoplanets , which are worlds from different star systems, by watching the fallout of these objects crashing into the corpses of dead stars .!! Their analysis suggests that molten worlds with atmospheres full of water or carbon dioxide will be more easily observed by instruments that will be available to scientists soon.
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And that's a boon for observers: If two planets have the same mass but one has a magma ocean and the other doesn't, it could be about 5% larger across, making it easier to spot. And a molten world is more likely to be leaking water and carbon dioxide from that liquid rock out into a developing atmosphere.
Those two molecules are easily released by molten rock, but they are also the sort of thing that future telescopes like NASA's James Webb Space Telescope are being designed to detect! Earth-Like Planets May Be Common Outside Our Solar System ...www.vice.com /en_us/article/kz4kzv/ ...our...Earth-Like Planets May Be Common Outside Our Solar System, Scientists Discover After studying the remains of exoplanets that crashed into dead stars, scientists think that rocky planets similar to...!! Webb won't be able to study Earth-size planets around stars like our sun, but it should be able to analyze those around smaller M dwarf stars.
Review: SSO aims for the stars with creative rendition of The Planets | Saskatoon StarPhoenix
In the silence and darkness of TCU Place on Saturday night, the long-armed shadow of Saskatoon Symphony Orchestra conductor Eric Paetkau led the audience soaring through our solar system.
Saturday's concert was anchored by Gustav Holst's classic suite The Planets — a fan favourite repeated every so often by the orchestra here in Saskatoon — and the orchestra delivered a strong performance that got better as the evening progressed.
Though, to be fair, it got better after a literally slow start. Mars, the Bringer of War — the first and probably most recognizable of all the parts of the suite — was not the bombastic and robust opening it usually is for The Planets! Earth-like Planets may be Common, Study Reveals - The ...reveals...By looking at rocky debris near small, cooled corpses of stars called white dwarfs, researchers have concluded that planets like ours may be common around other stars. The Cosmic Companion talks to...!! The tempo was a bit slower than the militaristic piece usually goes, and it lacked the characteristic sharpness that drives Mars forward.
Not to change the topic here:
Solar systems are 'baby-proof' for newborn planets - CNN
'Impossible' exoplanet and an alternate planet-formation theory | Space | EarthSky
The discovery of exoplanet GJ 3512b – a planet “too big for its star” – adds fuel to the competition between 2 theoretical models of how planets form. It suggests many more Jupiter-like planets are waiting to be found, orbiting nearby sunlike stars.
Notice the spiral structure here? This isn’t a galaxy; it’s a computer simulation of a newly forming solar system. It’s part of the disk instability model of how planets form, a model that’s been less accepted by astronomers – until now. A new discovery suggests this model may be correct. If so, Jupiter-like worlds may be common around nearby sunlike stars. Image via astronomical theorist Alan Boss/ Carnegie Science .
Boss’s new work is supported by a September 27, 2019, paper, published in the peer-reviewed journal Science , reporting on the discovery of a new exoplanet labeled GJ 3512b . This confirmed, massive, Jupiter-like planet orbits a very low-mass red dwarf star. And thus this planet – sometimes called the planet that shouldn’t exist – belies the previously most-popular theory of planetary formation, which had suggested it was impossible for such a massive planet to form around such a small star. From the September 27 paper:
Earth-like planets may be 'common' throughout the universe https://t.co/8aQxhovk7s MailOnline Sun Oct 20 08:30:04 +0000 2019
Why is one planet uninhabitable while life thrives on its virtual twin? What was Earth like before the atmosphere c… https://t.co/eUtzpgTXK1 UArkansas (from Fayetteville, AR) Sun Oct 20 15:00:48 +0000 2019
Planetary 'autopsies' show that rocky worlds with geochemistry similar to Earth may be quite common in the cosmos.… https://t.co/30x2nAENKz Reuters (from Around the world) Fri Oct 18 14:10:32 +0000 2019
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