Astronomy

Astronomers Identify Remains of Long-Lost Galaxy Consumed by the Milky Way

The Gaia spacecraft's view of the Milky Way galaxy, with purple marking the remains of the Pontus galaxy. (Image credit: ESA/Gaia/DPAC, CC BY-SA 3.0 IGO)The massive appetite of a GalaxyThe Milky Way galaxy devoured more galaxies in its early days than astronomers assumed.The Gaia spacecraft discovered the remains of an ancient cosmic collision in...

Space Hubble Captures Swirling Galactic Trio

Credit: ESA/Hubble & NASA, W. Keel, Dark Energy Survey, Department of Energy, Fermilab, Dark Energy Survey Camera, (DECam), Cerro Tololo Inter-American Observatory, NoirLab/National Science Foundation/AURA, Sloan Digital Sky Survey; Acknowledgment: J. SchmidtThe Swirling Galactic TrioThe mass of dust and brilliant swirls of stars in this picture are the far-off galaxy merger IC 2431, which...

Did Civilization Rise Because of a Comet Impact?

Credit: Vladislav TchakarovHuman beings unexpectedly changed around 13,000 years ago. Hunter-gatherer societies began to transform their lifestyle quickly. They began to construct permanent settlements and focused their efforts on farming. The earliest man-made megalithic structures around were also constructed around this period. Was a comet collision the reason behind this fast advancement of human...

The Largest Galaxy Ever Seen Has Just Been Discovered

The radio lobes of Alcyoneus. (Oei et al., arXiv, 2022).Astronomers have just discovered an absolute beast of a galaxyHiding some 3 billion light-years away, Alcyoneus is a giant radio galaxy reaching five megaparsecs into space. That is 16.3 million light-years long and represents the biggest recognized structure of galactic origin.The finding highlights our poor...

Parker Solar Probe Captures Its First Images of Venus’ Surface in Visible Light

Credit: NASA's Goddard Space Flight CenterNASA's Parker Solar Probe has taken its first visible-light pictures of the surface of Venus from spaceSurrounded in thick clouds, Venus' surface is usually hidden from view. However, in two current flybys of the Earth, Parker used its Wide-Field Imager, or WISPR, to image the whole nightside in wavelengths...

NASA Telescope Idea Could Spot Vegetation on Distant Exoplanets

Credit: Slava TuryshevNASA states it could detect "surface features" and even "hints of habitability" on distant planets.NASA is financing research for a conceptual telescope called a "solar gravitational lens" (SGL) that can allow us to observe remote exoplanets at a fantastic resolution-- a futuristic endeavor that might assist discovery at last if we...

This Is The James Webb Space Telescope’s First-Ever Photograph of a Star

Credit: NASAThe James Webb Space Telescope has observed its very first star (though it was not exactly tonight)-- and even taken a selfie, NASA revealed Friday.The telescope's first photoThe steps belong to the months-long process of aligning the observatory's substantial golden mirror that astronomers hope will start unraveling the secrets of the early Universe...

disk galaxy

Too Many Disk Galaxies Than Theory Allows

The Standard Model of Cosmology defines how the universe came into being according to the perspective of most physicists. Researchers at the University of Bonn have actually currently studied the evolution of galaxies within this model, finding considerable inconsistencies with real observations. The University of St. Andrews in Scotland and Charles University in the...

How Mars Lost its Oceans

Planet Mars illustration. Credit: NASAIt has long been recognized that Mars once had oceans due, in part, to a protective magnetic field similar to Earth's. Nevertheless, the electromagnetic field disappeared, and a new research study may lastly be able to explain why.Scientists recreated conditions anticipated in the core of Mars billions of years...

Cosmic Physics Innovation: Researchers Produce Particle-Antiparticle Pairs From a Vacuum

Credit: XponentialdesignCosmic physics simulated on the tabletop as graphene enables the Schwinger effect, forming particle-antiparticle pairs.Researchers at The University of Manchester succeeded in observing the supposed Schwinger effect. The Schwinger effect is an evasive process that usually happens only in cosmic events. The group - based at the National Graphene Institute - accomplished to...