Astronomie nieuws - NewsLocker

Slime Mold Can Teach Us About the Cosmic Web

19-09-2024 23:59 via universetoday.com

Computers truly are wonderful things and powerful but only if they are programmed by a skilful mind. Check this out… there is an algorithm that mimics the growth of slim mold but a team of researchers have adapted it to model the large scale structure of the Universe. Since the Big Bang, the universe has been expanding while gravity concentrates matter into galaxies and clusters of galaxies. Between them are vast swathes of empty space called voids. The structure, often referred to as the

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Building a Worldwide Map of Light Pollution

19-09-2024 21:58 via universetoday.com

As someone that has always lived in the UK countryside I am no stranger to the glory of a dark star-filled sky. Sadly 60% of the world’s population has already lost access to the night sky thanks to light pollution. Across Europe and the US that number climbs to nearer 80%. A team of researchers want to try and track the growth of light pollution and to that end have developed an inexpensive sensor made from “off-the-shelf” parts. Their hope is that people around the world will

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en kijk daar is Messier 103!

19-09-2024 20:48 via astroblogs.nl

Tjonge….jonge….jonge….wat een astrofotografie-productiviteit op dit moment alhier in the big and beautiful city of Dordrecht. “Jonge astrofoto-hond” Hopman Arie is niet meer te stuiten en ook deze oude astrofoto-vos woont tegenwoordig bijkans meer op zijn “astrodak” dan in huis. Eén ding moet ik trouwens wel bemerken en bekennen…maarre….het hele astrofoto-circus is er mijnerzijds wel een […]

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Hidden Figures Way | NASA’s Vision of Equality

19-09-2024 19:56 via youtube.com

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Life Might Thrive on the Surface of Earth for an Extra Billion Years

19-09-2024 19:18 via universetoday.com

The Sun is midway through its life of fusion. It’s about five billion years old, and though its life is far from over, it will undergo some pronounced changes as it ages. Over the next billion years, the Sun will continue to brighten.
That means things will change here on Earth.
As the Sun goes about its business fusing helium into hydrogen, the ratio of hydrogen to helium in its core changes. Over time, the core slowly becomes more enriched in helium. As helium accumulates in its core, th

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Exoplanets Could be Hiding Their Atmospheres

19-09-2024 17:02 via universetoday.com

Most of the exoplanets we’ve discovered orbit red dwarf stars. This isn’t because red dwarfs are somehow special, simply that they are common. About 75% of the stars in the Milky Way are red dwarfs, so you would expect red dwarf planets to be the most abundant. This also means that most habitable worlds are going to orbit these small, cool stars, and that has some significant consequences for our search for life.
To begin with, any potentially habitable red dwarf world will need to o

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Webb en Gaia zouden in L2 toch gerepareerd kunnen worden – indien nodig!

19-09-2024 14:24 via astroblogs.nl

Ruimtetelescopen zoals Webb en Gaia bevinden zich in Lagrangepunt 2 (kortweg L2), een punt op anderhalf miljoen km afstand van de aarde. Toen de Hubble ruimtetelescoop na zijn lancering door fouten een slechte optiek te hebben kon dat ‘gemakkelijk’ gerepareerd worden, omdat Hubble slechts 400 km boven de aarde zweeft en de Spaceshuttle met een […]

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Nieuwste Starlink-satellieten zijn nog grotere stoorzenders dan hun voorgangers - Astronomie.nl

19-09-2024 09:09 via news.google.com

Nieuwste Starlink-satellieten zijn nog grotere stoorzenders dan hun voorgangers Astronomie.nl

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Nieuwste Starlink-satellieten zijn nog grotere stoorzenders dan hun voorgangers

19-09-2024 09:09 via astronieuws.nl

Waarnemingen met de LOFAR-radiotelescoop lieten vorig jaar zien dat de eerste generatie Starlink-satellieten onbedoeld radiogolven uitzenden die astronomische waarnemingen kunnen hinderen. Uit nieuw onderzoek met LOFAR, de grootste radiotelescoop ter wereld die op lage frequenties waarneemt, blijkt dat de nieuwste Starlink-satellieten (‘V2-mini’) nog veel hinderlijker zijn. Ze produceren tot meer dan dertig keer zoveel radiostraling als hun voorgangers, en vormen zo een bedreiging vo

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The Dark Seahorse of Cepheus

19-09-2024 06:33 via apod.nasa.gov

Spanning light-years, this

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Actually, Ceres Might Have Formed in the Asteroid Belt After All

19-09-2024 04:28 via universetoday.com

Dwarf planet Ceres is the largest planetary body in the Asteroid Belt. For a long time, scientists thought it was born in the outer solar system and then migrated to its present position. Some evidence for that origin lies in extensive surface deposits of ammonium-rich materials on the Cerean surface.Some of those bright, white and whitish-yellow deposits are found in impact craters on Ceres. Researchers suspect they are the remnants of a brine that seeped to the surface from a liquid layer betw

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Metal Part 3D Printed in Space for the First Time

19-09-2024 04:17 via universetoday.com

Additive manufacturing, also known as 3D printing, has had a profound impact on the way we do business. There is scarcely any industry that has not been affected by the adoption of this technology, and that includes spaceflight. Companies like SpaceX, Rocket Lab, Aerojet Rocketdyne, and Relativity Space have all turned to 3D printing to manufacture engines, components, and entire rockets. NASA has also 3D-printed an aluminum thrust chamber for a rocket engine and an aluminum rocket nozzle, while

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NASA Watches a Peanut-Shaped Asteroid Drift Past Earth

19-09-2024 01:39 via universetoday.com

Peanuts! Get your peanuts here! The Solar System has been passing out peanuts lately in the form of two different oddly shaped asteroids that recently passed by Earth, and both look like over-sized peanuts. The latest peanut-shaped asteroid pass was on September 16, 2024, when the near-Earth asteroid 2024 ON came within 1 million kilometers (62,000 miles) of Earth (2.6 times the Earth-Moon distance). Radar imaging revealed the asteroid was peanut-shaped because it is actually a contact binary &n

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Did Mars Once Have a Third, Larger Moon?

19-09-2024 01:23 via universetoday.com

We are all familiar with our one Moon but other planets have different numbers of moons; Mercury has none, Jupiter has 95 and Mars has two. A new paper proposes that Mars may actually have had a third larger moon. Why? The red planet has a triaxial shape which means it bulges just like Earth does but along a third axis. The paper suggests a massive moon could have distorted Mars into this shape. Celestial bodies that orbit planets or dwarf planets are known as moons. They vary significantly

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