Science

“Hearst Magazines and Yahoo may earn commission or revenue on some items through these links.” Here’s what you’ll learn when you read this story: Scientists are close to creating a nuclear clock—an ultra-accurate clock that uses a low-energy transition in the nucleus of a thorium-229 atom to keep time. Electrical interference makes atomic clocks unsuited for dark matter detection, but …

Fossilized teeth discovered in Ethiopia have revealed a new-to-science species of Australopithecus, a genus of early hominins that lived from the Pliocene to the Early Pleistocene. Not only does it add to our busy human family tree, but the discovery proves they were living alongside the oldest specimens of Homo, the genus of early humans that includes our species, Homo …

Cell strains The E. coli K-12 MG1655 strain was grown in Luria–Bertani medium at 37 °C with shaking at 200 rpm until reaching an OD600 of approximately 0.6. For heat shock treatment, cells were incubated in a water bath at 44 °C for 10 min. For transcription inhibition, cells were treated with 25 or 750 µg ml−1 Rif for 40 min at 37 °C and 200 rpm. To induce …

Hug, C. B. & Vaquerizas, J. M. The birth of the 3D genome during early embryonic development. Trends Genet. 34, 903–914 (2018). CAS  PubMed  Google Scholar  Du, Z., Zhang, K. & Xie, W. Epigenetic reprogramming in early animal development. Cold Spring Harb. Perspect. Biol. 14, a039677 (2022). CAS  PubMed  PubMed Central  Google Scholar  Bonev, B. & Cavalli, G. Organization and …

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The richest person in the world is obsessed with creating a city on Mars. Elon Musk would like to see a million people living in a self-sufficient Martian settlement by 2050, both as a plan B for Earth and because it gives us something cool to get excited about. Traveling to Mars has been a recurring theme of spacefaring fantasies …

Hundreds of unexpectedly energetic objects have been discovered throughout the distant universe, possibly hinting that the cosmos was far more active during its infancy than astronomers once believed. Using deep-field images from NASA’s James Webb Space Telescope (JWST), researchers at the University of Missouri identified 300 unusually bright objects in the early universe. While they could be galaxies, astronomers aren’t …

Topline The annual Perseid meteor shower may have peaked overnight on Monday and Tuesday, but it did so in a night sky bleached by strong moonlight that blotted out many of the fainter “shooting stars.” Although the peak rate of meteors has since reduced, a darker sky this weekend may mean lingering Perseids are visible at night. The annual Perseid …

Black holes form when massive stars exhaust their nuclear fuel and collapse under their own gravity. This collapse compresses the core into a singularity, an infinitely dense point surrounded by the event horizon. The three main types are stellar-mass black holes, which weigh between 1 and 100 times the Sun’s mass and form after a supernova; intermediate-mass black holes, with …

Press enter or click to view image in full size The retrograde trajectory of 3I/ATLAS is perfectly aligned with the plane of the planets around the Sun, with a random chance of 1 in 500. Was this path designed by alien intelligence? (Image credit: theskylive.com) Science is fun. It offers an opportunity to learn something new, as long as we …