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Astrophysics

A giant radio telescope. Illustration: depositphotos.com

An innovative technique filters out real alien signals from mundane interference

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SETI researchers have invented a new technique for detecting potential alien radio signals
Aliens are listening for signals from Earth. Illustration: depositphotos.com

Can aliens discover us? New research explains

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What could aliens pick up from the radio leak from Earth? How would Earth look to an alien civilization light years away from us?
An image of the system HD 169142 shows the signal of the forming planet HD 169142 b (around 11 o'clock), and also a bright spiral arm following it as a result of the dynamic interaction between the planet and the disk in which it is located. Credit: V. Chrisitaens / ULiège

A new world is born: astronomers confirm a protoplanet 374 light years away from Earth

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Protoplanets form from clumps of material in disks around newborn stars. When the planet is still forming, that is, when it is still collecting material, it is called a protoplanet. This is only the third protoplanet discovered
Impressively, a pair of supermassive black holes (top left) emit gravitational waves that propagate through the fabric of space-time. These gravitational waves compress and stretch the trajectories of radio waves that emit pulsars (in white). By carefully measuring the radio waves, a team of scientists recently discovered for the first time the gravitational wave background of the universe. Credit: Aurore Simonnet for the NANOGrav Collaboration

Noisier than expected: Gravitational waves from supermassive black hole mergers "heard" for the first time

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NANOGrav Discovers Stronger Gravitational Waves Than Ever, Apparently Created by Pairs of Supermassive Black Holes
A new Web image showing a small area of ​​star formation in the Rho Ophiuchi cloud structure. Published on the occasion of the one year anniversary of the scientific activity of the James Webb Space Telescope. Photo: NASA/ESA/CSA

Webb marks one year of science with a close-up photo of the birth of sun-like stars

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From our own cosmic backyard in the Solar System to distant galaxies toward the dawn of time, the NASA/European Space Agency/CSA James Webb Space Telescope has lived up to its promise to reveal the universe like never before in its first year of scientific activity. To celebrate the end of a year A successful first, a new Web image has been released of a small star-forming region in the Rho Ophiuchi cloud complex
Artist's impression of the shock wave from a supernova colliding with the filament of the molecular cloud as the Sun forms. Credit: NAOJ

Cosmic Shield: How Our Solar System Survived a Supernova

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The meteorite components enriched in radioactive isotopes formed in the first 100,000 years or so of the formation of the Solar System within the dense filament. The mother filament may have served as a buffer that protected the young sun and helped capture the radioactive isotopes from the supernova shock wave and channel them into the still forming solar system.
On July 1, 2023, the Euclid spacecraft was successfully launched aboard Space-X's Falcon 9 rocket. Its purpose is to explore the mysterious components of the universe, dark matter and dark energy. Credit: Credit: SpaceX

The "Dark Universe" space telescope Euclid is launched on a mission to reveal the deepest mysteries of the cosmos

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The "Dark Universe" Euclid space telescope is launched on a mission to uncover the deepest mysteries of the cosmos
Credit: Breakthrough Listen / Danielle Futselaar

SETI searches for technology signatures: The hunt for extraterrestrial signals at the heart of the Milky Way begins

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Akshay Suresh, a graduate student at Cornell University, is leading an unusual scientific activity - a groundbreaking mission called BLIPSS to detect periodic signals emanating from the center of the Milky Way
Betelgeuse dims over time, with an interstellar cloud seen in the last panel. NASA, ESA and E. Wheatley (STScI)

Beetlejuice: The star continues to behave mysteriously - here's what will happen if it explodes

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At the end of 2019, the light of the star dimmed and went from the brightest in the Orion group to the third brightest. Since then it has returned and become even brighter than before
Planets orbit two suns. Illustration: depositphotos.com

A "Tatoine-like" planet orbiting two suns has been discovered

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An international team of astronomers has announced the discovery of a second planet in the circumbinary system (where planets orbit two suns) of the rare multiple planet BEBOP-1. This planet was discovered using the transit method and was noticed because it passed in front of the brighter of the two stars on different occasions
Gravitational waves. Illustration: depositphotos.com

An innovation in gravitational wave detectors could help decipher cosmic secrets

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A significant development in thin layer technology could possibly improve the sensitivity of gravitational wave detectors.
Hawking radiation from a black hole. Illustration: depositphotos.com

Everything in the universe is doomed to evaporate - Hawking's radiation theory is not limited to black holes

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A team of researchers confirmed Hawking's prediction of evaporating black holes, but extended its application to all large objects in the universe
The galaxy GS-9209. credit g. brammer c. Williams A. carnall, University of Edinburgh

Webb revealed features of a galaxy 25 billion light years away

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The galaxy is currently 25 billion light-years away, but when light began to travel from it to us about 12.5 billion years ago, it was much closer, because the universe is expanding
Landmarks in the expansion of the universe. From Wikipedia

The uniformity of the cosmic background radiation

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Diagram of filament flows from Sagittarius *A, the massive black hole at the center of the Milky Way. Photo: Farhad Yusef-Zada/Northwestern University

Mysterious undertones at the center of the Milky Way

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An international group of astrophysicists discovered something completely new, hidden in the center of the Milky Way galaxy
A planet in the life zone or golden zone - where water can exist in a liquid state. Illustration: depositphotos.com

Golden zones abound: hundreds of millions of planets in the Milky Way could possibly support life

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A new study suggests that a third of the planets orbiting dwarf stars common to the Milky Way could potentially support life. As in the story of Goldilocks and the Three Bears, one plate is too hot, the second is too cold and the third is just right
SMACS galaxy cluster. This image of the galaxy cluster SMACS 0723 and its surroundings was the first image released from the James Webb Space Telescope in July 2022. The five close-up images are about 19,000 light-years across and show galaxies as they appeared about 13 billion years ago. Careful analysis of these galaxies reveals that if we cannot resolve the discrepancy, we may greatly underestimate the total mass of its stars. Image credit: NASA, ESA, CSA, STScI / Giménez-Arteaga et al. (2023), Peter Lorsen (Cosmic Dawn Center).

Astronomers are surprised by the unexpected size of galaxies in the early universe photographed by the James Webb Space Telescope

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The first findings from the James Webb space telescope hinted at galaxies so early and massive that they are somewhat inconsistent with our understanding of the formation of structure in the universe. A new study tries to deal with these contradictions
Artist's rendering of the planet GJ 1214 b. Credit: NASA/JPL-Caltech/R. Hurt (IPAC)

Glowing steamy surprise: NASA's Webb takes a closer look at a mysterious planet

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"The planet is completely covered in a kind of layer of fog or clouds," said Eliza Kempton, a researcher at the University of Maryland and lead author of a new paper on the planet published in Nature. "The atmosphere simply remained completely hidden from us until this observation." She noted that if the planet was indeed rich in water, it could have been a "water world", with large amounts of water and ice material at the time of its formation.
This artist's illustration shows a collision between two bodies of ice and dust orbiting the bright star Pomelhot, 25 light-years away. This may have caused an expanding cloud of very fine dust particles. Credit: ESA, NASA and M. Kornmesser

Webb explores the asteroid belt of the young solar system Pummelhot and discovers evidence of hidden planets

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The belts surround the hot young star, which can be seen with the unaided eye as the brightest star in the southern group Southern Pisces. The dust belts are fragments from the collisions of larger bodies, corresponding to asteroids and comets, and are often described as "fragment disks"
Scientists observing the compact radio core of M87 have discovered new details about the galaxy's supermassive black hole. In this artist's view, the black hole's massive jet appears to rise from the center of the black hole. The observations on which this figure is based represent the first time the jet and the black hole's shadow have been imaged together, providing scientists with new insights into how black holes can launch these powerful jets. Courtesy of ESO

For the first time a black hole was photographed together with the turbulent environment near it

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In a recent paper published in the journal Nature, scientists analyzed new data from the Event Horizon Telescope (EHT) to produce the most detailed image yet of the supermassive black hole at the center of the galaxy M87
The distribution of dark matter in a segment of the southern sky. Based on data from the ACT observatory in Chile that operated between 2007-2022. Courtesy of Princeton University and the University of Pennsylvania

A new map of dark matter verifies Einstein's theory of general relativity

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A groundbreaking new map of dark matter has been created using data from the Dark Energy Survey (DES), in an international collaboration of astronomers and physicists. The map shows the distribution of dark matter in the southern sky region, and is the most accurate and detailed map of its kind ever created
The gravitational cooling effect in space. Illustration: depositphotos.com

The Dark Mysteries of the Cosmos: Unraveling the Secrets of an Invisible Galaxy

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A mysterious and very distant object, in the universe as it was "only" two billion years after the big bang, hidden from even the most advanced devices. Its properties were finally described in a study by the International Research Institute SISSA
V838 Monocerotis A red variable star in the Monocros group. Illustration: depositphotos.com

Cosmic dust factories: variable stars and the origin of life

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It was found that stars with variable light intensity influence the production of the interstellar dust and its enrichment in heavy elements from which life was created
Measuring the atmosphere of the planet Trappist-1b. NASA/MIT figure

Two new types of planets have been discovered by the Webb Space Telescope

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For the first time, the temperature of a rocky planet was measured, as well as a planet similar to Jupiter but containing large amounts of heavy elements
Three new fast radio bursts discovered by the Westerburk telescope in the Netherlands penetrated the halo of our neighbor the Triangulum Galaxy. Credit: ASTRON/Futselaar/van Leeuwen

Astronomers discover powerful fast radio bursts impaling nearby galaxies and help find dark matter

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Many astronomers think they are emitted by neutron stars. The density and magnetic field strength of these very compact stars are unique in the universe. Now they have become a tool that measures the concentration of dark atoms in the galaxies it passes through
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