Megasatellite constellations could jeopardize the recovery of ozone holes Pollution from the rising number of satellites burning up in Earth’s atmosphere could threaten our planet’s protective ozone layer By Max Springer Light trails from low-Earth orbit satellites fill the sky in this long-exposure composite image captured over a period of 30 minutes. Alan Dyer/VWPics/Alamy Stock … Read more
This article was reviewed according to Science fact checked peer-reviewed publication trusted source proofread OK! Artist’s impression of a microlensing event caused by a black hole observed from Earth towards the Large Magellanic Cloud. The light from a background star in the GMC is diffracted by a putative primordial black hole (lens) in the Milky … Read more
This article was reviewed according to Science fact checked peer-reviewed publication trusted source proofread OK! For the past seventy years, astrophysicists have theorized the existence of ‘kugelblitze’, black holes caused by extremely high concentrations of light. They speculated that these special black holes may be related to astronomical phenomena such as dark matter, and that … Read more
If you squeeze enough stuff into one place, space-time itself will contract in a sweet cosmic kiss known as a black hole. As far as Einstein’s sums go, that “stuff” includes the massless glow of electromagnetic radiation. Given E = mc2which describes the equivalence between mass and energy, the energy of light itself should – … Read more
Supermassive black holes appear to be present at the center of every galaxy, dating back to some of the earliest galaxies in the universe. And we have no idea how they got there. It shouldn’t be possible for them to grow from supernova remnants to supermassive sizes so quickly. And we are not aware of … Read more
This article was reviewed according to Science fact checked trusted source proofread OK! A swirling black hole hiding within the features of the black holes that merged to create it. Credit: Robert Lea × close to A swirling black hole hiding within the features of the black holes that merged to create it. Credit: Robert … Read more
A swirling black hole hiding within the features of the black holes that merged to create it. Credit: Robert Lea Astronomers believe that at the heart of most, if not all, galaxies lies a gigantic black hole with a mass millions or even billions of times greater than that of our Sun. These supermassive black … Read more
We’ve just seen concrete confirmation that galaxies could collide and grow in the early universe. Scientists have finally discovered two blazing quasars – galaxies powered by supermassive black holes – that merged into the Cosmic Dawn just 900 million years after the Big Bang. It is the first colliding quasar pair we have found in … Read more
Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news about fascinating discoveries, scientific developments and more. CNN — For about fifty years, the scientific community has been grappling with a substantial problem: there isn’t enough visible matter in the universe. All the matter we can see — stars, planets, cosmic dust … Read more
A binary black hole system in an active galaxy about 4 billion light-years away has been seen to brighten dramatically as one of the black holes plowed through the accretion disk of the other, briefly creating a double quasar. A quasar is the extremely active core of a distant galaxy. This activity is the product … Read more