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New Study Examines Cosmic Expansion, Leading to a New Drake Equation

14-11-2024 23:31 via universetoday.com

In 1960, in preparation for the first SETI conference, Cornell astronomer Frank Drake formulated an equation to calculate the number of detectable extraterrestrial civilizations in our Milky Way. Rather than being a scientific principle, the equation was intended as a thought experiment that summarized the challenges SETI researchers faced. This became known as the Drake Equation, which remains foundational to the Search for Extraterrestrial Intelligence (SETI) to this day. Since then, astronome

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Pentagon’s Latest UFO Report Identifies Hotspots for Sightings

14-11-2024 23:04 via universetoday.com

The Pentagon office in charge of fielding UFO reports says that it has resolved 118 cases over the past year, with most of those anomalous objects turning out to be balloons. But it also says many other cases remain unresolved.This year’s legally mandated report from the Department of Defense’s All-Domain Anomaly Resolution Office, or AARO, also identifies areas of the world that seem to be hotspots for sightings of unidentified flying objects. Such objects have been re-branded as un

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A New Way to Detect Daisy Worlds

14-11-2024 22:15 via universetoday.com

The Daisy World model describes a hypothetical planet that self-regulates, maintaining a delicate balance involving its biogeochemical cycles, climate, and feedback loops that keep it habitable. It’s associated with the Gaia Hypothesis developed by James Lovelock. How can we detect these worlds if they’re out there?By looking closely at information.
A Daisy World (DW) is inhabited by two types of daisies: white and black. They have different albedos, and the blacks absorb more sunlig

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Two Supermassive Black Holes on the Verge of a Merger

14-11-2024 19:43 via universetoday.com

In March 2021, astronomers observed a high-energy burst of light from a distant galaxy. Assigned the name AT 2021hdr, it was thought to be a supernova. However, there were enough interesting features that flagged as potentially interesting by the Automatic Learning for the Rapid Classification of Events (ALeRCE). In 2022, another outburst was observed, and over time the Zwicky Transient Facility (ZTF) found a pattern of outbursts every 60–90 days. It clearly wasn’t a supernova, but i

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Nieuwste resultaten South Pole Telescope ondersteunen het standaard kosmologische model

14-11-2024 19:38 via astroblogs.nl

Sterrenkundigen hebben met de South Pole Telescope (SPT) op de Zuidpool de kosmische microgolf-achtergrondstraling (Engelse afkorting: CMB) bestudeerd, de straling die het restant is van de hete oerknal, waarmee 13,8 miljard jaar geleden het heelal ontstond. Met die telescoop van het Amundsen-Scott South Pole Station, exact op de Zuidpool gelegen, kan men de polarisatie van […]

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Interferometry Will Be the Key to Resolving Exoplanets

14-11-2024 18:14 via universetoday.com

When it comes to telescopes, bigger really is better. A larger telescope brings with it the ability to see fainter objects and also to be able to see more detail. Typically we have relied upon larger and larger single aperture telescopes in our attempts to distinguish exoplanets around other stars. Space telescopes have also been employed but all that may be about to change. A new paper suggests that multiple telescopes working together as interferometers are what’s needed. When teles

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A New Mission To Pluto Could Answer the Questions Raised by New Horizons

14-11-2024 17:36 via universetoday.com

Pluto may have been downgraded from full-planet status, but that doesn’t mean it doesn’t hold a special place in scientist’s hearts. There are practical and sentimental reasons for that – Pluto has tantalizing mysteries to unlock that New Horizons, the most recent spacecraft to visit the system, only added to. To research those mysteries, a multidisciplinary team from dozens of universities and research institutes has proposed Persephone – a mission to the Pluto sys

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Astronomers Map the Shape of a Black Hole's Corona for the First Time

14-11-2024 17:24 via universetoday.com

If you were lucky enough to observe a total eclipse, you are certain to remember the halo of brilliant light around the Moon during totality. It’s known as the corona, and it is the diffuse outer atmosphere of the Sun. Although it is so thin we’d consider it a vacuum on Earth, it has a temperature of millions of degrees, which is why it’s visible during a total eclipse. According to our understanding of black hole dynamics black holes should also have a corona. And like the Sun

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Paul Groot benoemd tot Nederlands lid van de ESO-Council - Astronomie.nl

14-11-2024 15:53 via news.google.com

Paul Groot benoemd tot Nederlands lid van de ESO-Council Astronomie.nl

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Yes, Virginia, The Universe is Still Making Galaxies

14-11-2024 15:21 via universetoday.com

Despite the fact that our universe is old, cold, and well past its prime, it’s not done making new galaxies yet.Galaxy formation first got started when our universe was only a few hundred million years old. In those dark ages the first stars gathered enough material to trigger nuclear fusion and ignite. Slowly over time those clumps of stars found each other and began to build the first young protogalaxies. Over time those protogalaxies accumulated more material and merged together to

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Our Breathtaking Cosmos: New Zealand Astrophotography Winners Announced

14-11-2024 15:06 via universetoday.com

The New Zealand Astrophotography Competition showcases and recognizes some of the most stunning images of the southern hemisphere’s night sky. This year, photographers from across New Zealand have captured some incredibly breathtaking skyscapes such as amazing auroras, stunning images of our Solar System, and deep-sky marvels.Universe Today was proud to be part of this year’s competition, as our own Fraser Cain was one of the judges.
The overall winner in the competition is a gorgeou

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Why are Some Quasars So Lonely?

14-11-2024 13:08 via universetoday.com

At the centre of most galaxies are supermassive black holes. When they are ‘feeding’ they blast out jets of material with associated radiation that can outshine the rest of the galaxy. These are known as quasars and they are usually found in regions where huge quantities of gas exist. However, a recent study found a higher than expected number of quasars that are alone in the Universe. These loners are not surrounded by galaxies nor a supply of gas. The question therefore remains, ho

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Astronomen ontdekken mysterieuze 'Rode Monster' sterrenstelsels in het vroege heelal

14-11-2024 12:27 via spacepage.be

Een internationaal team onder leiding van de Universiteit van Genève (UNIGE) en met professor Stijn Wuyts van de Universiteit van Bath heeft drie ultramassieve sterrenstelsels geïdentificeerd, elk bijna net zo massief als de Melkweg, die zich al binnen de eerste miljard jaar na de oerknal hadden gevormd. De resultaten van de onderzoekers wijzen erop dat de vorming van sterren in het vroege heelal veel efficiënter was dan eerder werd gedacht, waardoor bestaande modellen voor de v

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Hoe goed kennen we Uranus écht? Flyby van Voyager 2 gaf ons mogelijk een vertekend beeld

14-11-2024 08:30 via scientias.nl

Onderzoekers hebben ontdekt dat vlak voor Voyager’s bezoek een intense zonnestorm het magnetisch veld van Uranus samendrukte. Dit heeft vervolgens omstandigheden gecreëerd die waarschijnlijk maar 4 procent van de tijd voorkomen. Het is 24 januari 1986. Voyager 2 suist al zeker acht en half jaar met een haastige 48.000 kilometer per uur door ons zonnestelsel. […]
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IC 348 and Barnard 3

14-11-2024 06:28 via apod.nasa.gov

IC 348 and Barnard 3

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