Young stars more than twice the Sun's mass generate extreme radiation that makes it very challenging for planets to coalesce from dust and gas. And yet a handful of exoplanets more massive than Jupiter and on orbits more distant than Pluto's have been discovered around these O and B stars.
Astronomers theorize that stars like our Sun build planets from a swirling disk of dust and gas. ( Many observations support this theory.) Gravitational instabilities in the disk cause small clumps of planetary material to collapse inward and accrete more material.
Big planets get a head start in pancake-thin nurseries
Using the Atacama Large Millimeter Array (ALMA) in Chile, the team obtained very high resolution images of the proto-planetary disk Oph163131, located in a nearby star-forming region called Ophiuchus.
"Looking at proto-planetary disks edge-on gives a clear view of the vertical and radial dimensions, so that we can disentangle the dust evolution processes at work," said Villenave. "ALMA gave us our first look at the distribution of millimeter-sized grains in this disk.
See Jupiter at its best at opposition, closest to Earth since 1963 | Space
In recent nights there has been a brilliant light that has been calling attention to itself low in the eastern sky at around 7:30 p.m. local daylight time.
Of course, that would make some sense because you are looking at the object named after the king of the gods and also the king of the planets: Mighty Jupiter.
The Drake equation for alien intelligence is more important than ever | Space
This article was originally published at The Conversation (opens in new tab) . The publication contributed the article to Space.com's Expert Voices: Op-Ed & Insights .
How many intelligent civilizations should there be in our galaxy right now? In 1961, the US astrophysicist Frank Drake, who passed away on Sept. 2 at the age of 92, came up with an equation to estimate this (opens in new tab) .
How global warming affects astronomical observations -- ScienceDaily
The quality of ground-based astronomical observations delicately depends on the clarity of the atmosphere above the location from which they are made. Sites for telescopes are therefore very carefully selected.
A team of researchers led by the University of Bern and the National Centre of Competence in Research (NCCR) PlanetS shows in a study, published in the journal Astronomy & Astrophysics and presented at the Europlanet Science Congress 2022 in Granada, how one of the major challenges of our ...
Even Though It's a Galaxy Far, Far Away, Some Folks Don't Care for 'Andor' Introducing New Planets
Andor ‘s first three episodes dropped on Wednesday, and most Star Wars fans were left impressed and delighted.
But you can’t please everyone. On r/StarWars, some fans are grousing that Disney is introducing too many new planets . This feels like an odd criticism as one of the big complaints about previous streaming shows is that we’re seeing the same old locations over and over again.
Bright Idea: Science Friday's Sun Camp! - Science Friday
Auroras on Jupiter Seen Spawning Massive and Extreme Heat Waves - CNET
The observations help solve one of the more perplexing mysteries in our solar system: why some gas giant planets in deep space, including Jupiter and Saturn, are hotter than expected when they should be ice cold.
A team led by James O'Donoghue of the Japanese Aerospace Exploration Agency, or JAXA, produced maps of Jupiter's upper atmosphere that helped identify an unexpected heated region with temperatures of 700 degrees Celsius (1,292 degrees Fahrenheit) spanning roughly 10 Earth diameters.
Physics & Astronomy Seminar: Alessandro Morbidelli (Observatoire de la Cote d'Azur) | Intercom ...
You are invited to our next Physics and Astronomy Colloquia event taking place on Tuesday, September 27, from 12:10 - 1 PM in CNS 206/208. At this seminar, we will be joined by Alessandro Morbidelli. Pizza lunch provided!
Abstract : The discovery of extrasolar planetary systems has revealed, astonishingly, that our Solar System is not the typical system. Jupiter is the only planet of the Solar System that we can detect around other stars with current technology.
Army of the Alien Monkeys
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