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Webb Space Telescope Tracks Fireworks Around Our Galaxy’s Black Hole

18-02-2025 23:07 via universetoday.com

The supermassive black hole at the center of our Milky Way galaxy may not be as voracious as the gas-gobbling monsters that astronomers have seen farther out in the universe, but new findings from NASA’s James Webb Space Telescope reveal that its surroundings are flaring with fireworks.JWST’s readings in two near-infrared wavelengths have documented cosmic flares that vary in brightness and duration. Researchers say the accretion disk of hot gas surrounding the black hole, known as S

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What Would Actual Scientific Study of UAPs Look Like?

18-02-2025 23:06 via universetoday.com

For those who missed the memo, UFOs (Unidentified Flying Objects) are now called UAPs (Unidentified Aerospace-Undersea Phenomena). The term UFO became so closely tied to alien spacecraft and fantastical abduction stories that people dismissed the idea, making any serious discussion difficult. The term UAP is a broader term that encompasses more unexplained objects or events without the alien spaceship idea truncating any useful or honest discussion.While the name change is helpful, it’s ju

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This Ancient Galaxy Cluster is Still Forming Stars When it Should be ‘Red and Dead’

18-02-2025 19:40 via universetoday.com

The Phoenix Cluster is one of the most massive galaxy clusters known. Astronomers have identified 42 member galaxies so far, yet there could be as many as 1,000 in the cluster. Because of its size and its age, it should be finished with the vigorous star formation characteristic of young galaxies.But it’s not.
Star formation needs cold, dense gas. Hot gas resists collapsing into stellar cores, which become protostars and then main sequence stars. Old galaxies and clusters have either used

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A Spiral Structure in the Inner Oort Cloud

18-02-2025 19:15 via universetoday.com

We typically think of the Oort cloud as scattered ice balls floating far from the Sun, yet still tied to it gravitationally. Occasionally, some wayward gravitational perturbation will knock one of them a weird way and create a long-period comet, which might briefly delight us lowly humans by providing something interesting in the sky to look at. But what the Oort cloud actually looks like and how it is affected by forces greater than just our solar system has remained somewhat of a mystery. A ne

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Geweldige lichtshow: dit zwarte gat in het hart van de Melkweg zet zijn feestmuts op

18-02-2025 19:00 via scientias.nl

Het superzware zwarte gat Sagittarius A* is erg actief, het lijkt wel feest op de beelden van James Webb. Het werk van de ruimtetelescoop heeft een gedetailleerd plaatje opgeleverd van dit bijzondere ruimteobject dat zich in het centrum van ons sterrenstelsel bevindt. De schijf van gas en stof die om het zwarte gat draait, straalt […]
Meer wetenschap? Lees de nieuwste artikelen op Scientias.nl .

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Firefly Blue Ghost Mission 1 Lunar Landing (Official NASA Broadcast)

18-02-2025 18:26 via youtube.com

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Podcast: Einsteinringen, hoogenergetische deeltjes en meer! | Scientias-podcast 5

18-02-2025 18:00 via scientias.nl

Heb je belang bij wetenschappelijke datingtips voor de volgende Valentijnsdag? En wil je meer weten over zogenoemde Einstein-ringen die alleen te zien zijn met een goede telescoop? Luister dan de nieuwe podcast in je favoriete podcast-app!
Meer wetenschap? Lees de nieuwste artikelen op Scientias.nl .

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Net sciencefiction: eerste 3D-waarnemingen van atmosfeer exoplaneet brengen uniek klimaat aan het licht

18-02-2025 17:00 via astroblogs.nl

Astronomen hebben door de atmosfeer van een planeet buiten het zonnestelsel heen gekeken, en voor het eerst diens 3D-structuur in kaart gebracht. Door alle vier de 8,2-meter telescopen van de Very Large Telescope (VLT) van de Europese Zuidelijke Sterrenwacht (ESO) met elkaar te combineren, ontdekten ze sterke winden die chemische elementen zoals ijzer en titanium […]

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Eerste 3D-waarnemingen van atmosfeer op exoplaneet onthullen uniek klimaat: “Zet onze kennis van het weer op zijn kop”

18-02-2025 17:00 via scientias.nl

Voor het eerst hebben wetenschappers de driedimensionale structuur van de atmosfeer van een exoplaneet in beeld gebracht. Met behulp van de vier telescopen van de Very Large Telescope (VLT) in Chili ontdekten ze krachtige winden die metalen zoals ijzer en titanium door de atmosfeer verplaatsen. Dit wijst op een bijzonder weerpatroon dat nog niet eerder […]
Meer wetenschap? Lees de nieuwste artikelen op Scientias.nl .

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Eerste 3D-waarnemingen van atmosfeer exoplaneet brengen uniek klimaat aan het licht

18-02-2025 17:00 via astronieuws.nl

Astronomen hebben door de atmosfeer van een planeet buiten ons zonnestelsel heen gekeken, en voor het eerst diens 3D-structuur in kaart gebracht. Door alle vier de 8,2-meter telescopen van de Very Large Telescope (VLT) van de Europese Zuidelijke Sterrenwacht (ESO) met elkaar te combineren, ontdekten ze sterke winden die chemische elementen zoals ijzer en titanium met zich mee voeren. Zo ontstaan complexe weerpatronen in de atmosfeer van de planeet. De ontdekking maakt gedetailleerde studies moge

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Liquid Mirrors Can Only Point Straight Up. Could Magnets Solve This Problem?

18-02-2025 16:44 via universetoday.com

When it comes to telescope mirrors, larger is generally better. The larger your main mirror, the more light you can capture and the more faint and distant objects you can see. The problem is that large mirrors are difficult to manufacture. They also deform under their own weight, which means you need an expensive support structure to keep it in alignment. The most common way to get around these challenges is to make telescopic mirrors in segments, but another solution is to simply use a liquid m

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Mercury Completes the Planetary Parade at Dusk

18-02-2025 16:30 via universetoday.com

One planet was missing from the sunset lineup… until now.Perhaps you’ve seen the news headlines admonishing sky watchers to ‘See All Naked Eye Planets…at Once!’ in January. While this was basically true, it was also missing one key player: Mercury. This week, the swift inner planet joins the scene at dusk.
It’s certainly rare to see all the planets in the solar system in one sweep. This sort of lineup depends mainly on slow moving Jupiter and Saturn, which h

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Why We Think Theia Existed

18-02-2025 15:01 via universetoday.com

The giant-impact hypothesis posits that billions of years ago a Mars-sized body named Theia collided with the early Earth.
The immense energy from this impact not only significantly altered Earth’s rotational dynamics but also resulted in debris being ejected into space. Over time, this debris coalesced to form the Moon.We do not know for sure if Theia existed and if it collided with the young proto-Earth, but the evidence is compelling.For one, we are the only rocky planet with a substant

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Unlocking Venus’ Secrets with VATMOS-SR Mission Concept

18-02-2025 06:04 via universetoday.com

What can Venus atmospheric samples returned to Earth teach us about the varied evolution of both planets? This is what a recent study presented at the American Geophysical Union (AGU) Fall 2024 Meeting discussed a compelling mission concept called VATMOS-SR (Venus ATMOSphere – Sample Return), which is designed to collect samples from Venus’ atmosphere and return them to Earth for further study. This mission has the potential to help scientists gain greater insights into the formation

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Huge Release of Type 1a Supernovae Data

18-02-2025 03:02 via universetoday.com

Type 1a supernovae are extremely powerful events that occur in binary systems containing at least one white dwarf star – the core remnant of a Sun-like star. Sometimes, the white dwarf’s powerful gravity will siphon material from its companion star until it reaches critical mass and explodes. In another scenario, a binary system of two white dwarfs will merge, producing the critical mass needed for a supernova. Unlike regular supernovae, which occur every fifty years in the Milky Way

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