Hubble tension has gotten worse lately. Credit: Perivolaropoulos and Skara Our best understanding of the universe is rooted in a cosmological model known as LCDM. The CDM stands for cold…
Category: Cosmology
Dynamical dark energy might explain strange 21-cm signal
An artist’s representation of what the first stars to light up the universe might have looked like in the Cosmic Dawn. Credit: NASA/WMAP Science Team Dark energy may evolve in…
Cosmological models are built on a simple, century-old idea, but new observations demand a radical rethink
by David Wiltshire, Eoin O Colgain, Jenny Wagner and Shahin Sheikh-Jabbari, The Conversation Our ideas about the universe are based on a century-old simplification known as the cosmological principle. It…
Primordial black holes may have ‘frozen’ the early universe
Artist’s logarithmic scale conception of the observable universe with the Solar System at the center, inner and outer planets, Kuiper belt, Oort cloud, Alpha Centauri, Perseus Arm, Milky Way galaxy,…
The first black hole portrait got sharper thanks to machine learning
If the first image of a black hole looked like a fuzzy doughnut, this one is a thin onion ring. Using a machine learning technique, scientists have sharpened the portrait…
Scientists find first evidence that black holes are the source of dark energy
NGC524: NGC 524 is a lenticular galaxy in the constellation Pisces. It is at a distance of about 90 million light-years away from Earth. Credit: ESA/Hubble Observations of supermassive black…
The tiny satellite aiming to reveal what dark matter is made of
Milky Way over sand dunes in Cervantes, Australia. Credit: Nik Coli/Shutterstock The European Space Agency (ESA) recently announced a new mission of its science program: a small telescope orbiting the…
Astrophysicists chronicle the history of mathematical cosmology
Credit: Unsplash/CC0 Public Domain RUDN University astrophysicists have gathered the most important discoveries of modern cosmology from 1917 to our time. The collected data became an introduction to Philosophical Transactions…
