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An Israeli laboratory has grown synthetic mouse embryos with a beating brain and heart — in an egg-free sperm-free procedure that uses stem cells taken from the skin. The breakthrough, published Monday in the peer-reviewed journal Cell, is the first time advanced embryos of any species have been made from stem cells alone, said cell biologist Prof. Jacob Hanna of the Weizmann Institute of Science told The Times of Israel. . Hanna, who led the research, said that previous efforts have only led to blastocysts, meaning structures formed early in mammalian development. Blastocysts have a fraction of the millions of more cells present in their embryos. “Excellent,” he commented. “No sperm, no eggs and no uterus, but we managed to get embryos formed from stem cells alone for up to eight days – a third of the gestational age of mice – with beating hearts.” He said the research could one day be used to grow artificial human embryo-like structures to produce cells for futuristic medical sol

A mysterious radio explosion with a pattern similar to a heartbeat has been detected in space. Astronomers estimate that the signal came from a galaxy about a billion light years away, but the exact location and cause of the explosion is unknown. A study detailing the findings published Wednesday in the journal Natural . Rapid radio bursts, or FRBs, are intense, millisecond-long bursts of radio waves of unknown origin. The first FRBs were discovered in 2007, and since then, hundreds of these rapid cosmic flashes have been detected coming from various distant points throughout the universe. Watch the latest News on Channel 7 or stream for free on 7plus >> Many FRBs release super-bright radio waves that last only a few milliseconds before disappearing completely, and about 10 percent of them are known to repeat and have patterns. Fast radio bursts are so fast and unpredictable that they are difficult to observe. One of the sources used to find them is a radio telescope called th

Astronomers at MIT and elsewhere have detected a strange and persistent radio signal from a distant galaxy that appears to flicker with surprising regularity. The signal is classified as a rapid radio burst, or FRB — a very powerful burst of radio waves of unknown astrophysical origin, which usually lasts a few milliseconds at most. However, this new signal lasted up to three seconds, about 1,000 times longer than the FRB average. Within this window, the team detected bursts of radio waves that repeated every 0.2 seconds in a clear periodic pattern, similar to a heartbeat. The researchers have labeled the signal FRB 20191221A, and it is currently the most durable FRB, with the clearest periodic pattern, detected to date. The source of the signal lies in a distant galaxy, a few billion light years from Earth. Exactly what the source is remains a mystery, although astronomers suspect the signal could be from a radio pulsar or a magnetar, both types of neutron stars – the cores of gian

Astronomers at MIT and universities in Canada and the United States have detected a strange and persistent radio signal from a distant galaxy that seems to flicker with surprising regularity. The signal is classified as a rapid radio burst, or FRB — a very powerful burst of radio waves of unknown astrophysical origin, which usually lasts a few milliseconds at most. However, this new signal lasted up to three seconds, about 1,000 times longer than the FRB average. Within this window, the team detected bursts of radio waves that repeated every 0.2 seconds in a clear periodic pattern, similar to a heartbeat. The researchers have labeled the signal FRB 20191221A, and it is currently the most durable FRB, with the clearest periodic pattern, detected to date. The source of the signal lies in a distant galaxy, a few billion light years from Earth. Exactly what the source is remains a mystery, although astronomers suspect the signal could be from a radio pulsar or a magnetar, both types of