The first run of a new dark matter experiment turns up nothing — but that still tells us something. The post Dark Matter Remains Elusive – For Now appeared first on Sky & Telescope.
Read MoreTag: Cosmology
Hubble Image Reveals Possible Quasar Forerunner
A distant object in a deep Hubble Space Telescope field could be in transition from ordinary galaxy to brilliant beacon of light. The post Hubble Image Reveals Possible Quasar Forerunner appeared first on Sky & Telescope.
Read MoreMeet Earendel, the Most Distant Star Astronomers Have Observed
The Hubble Space Telescope has revealed a single star whose light has traveled for 12.9 billion years to Earth — the most distant star known. The post Meet Earendel, the Most Distant Star Astronomers Have Observed appeared first on Sky & Telescope.
Read MoreNo Signal from Cosmic Dawn
Four years after one experiment found tentative signs of the “cosmic dawn,” the era of the first stars, another experiment finds nothing. The post No Signal from Cosmic Dawn appeared first on Sky & Telescope.
Read MoreHow Galaxies Lose Their Dark Matter
A careful study of cosmological simulations shows that dark matter–less galaxies aren’t impossible — just really rare. The post How Galaxies Lose Their Dark Matter appeared first on Sky & Telescope.
Read MoreAstronomy in Pictures: Largest 3D Map of Our Universe and a Stellar Intruder
This week astronomers have announced the completion of the largest 3D map of galaxies across the cosmos, plus exquisite radio observations show what happens when a stellar intruder interrupts planet formation. The post Astronomy in Pictures: Largest 3D Map of Our Universe and a Stellar Intruder appeared first on Sky & Telescope.
Read MoreNo Release for the Hubble Tension
New data and analysis show that a long-standing discrepancy in the measurement of the current expansion rate of the universe is real — even as the reason for it remains a mystery. The post No Release for the Hubble Tension appeared first on Sky & Telescope.
Read MoreTwisters in the Cosmic Web
Astronomers have found that the largest structures in the universe spin, making twister-like strings of galaxies and dark matter in the cosmic web. The post Twisters in the Cosmic Web appeared first on Sky & Telescope.
Read MoreDark Energy Survey Catalogs 226 million Galaxies
The latest release from the Dark Energy Survey catalogs millions of galaxies, mapping the history of galaxy clustering across space and time. The post Dark Energy Survey Catalogs 226 million Galaxies appeared first on Sky & Telescope.
Read MoreIn Search of Ancient Suns
We track down and admire five of the most ancient stars in the universe. The post In Search of Ancient Suns appeared first on Sky & Telescope.
Read More