NASA Reveals Plans To Broadcast Total Solar Eclipse – When To Watch forbes.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from forbes.com Daily Mail and Mail on Sunday newspapers.
CANTON — St. Lawrence University is celebrating its position within the path of totality with a new website dedicated to informing the public about the Total Solar Eclipse on April 8, 2024. The …
David Hurd’s excitement over what’s about to happen in the skies above him is obvious when he speaks. It even comes through in his voicemail these days. “We are so excited for April 8,” says the recorded message from Hurd, a geosciences professor and director of the planetarium at PennWest
Observationally, kilonovae are astrophysical transients powered by the radioactive decay of nuclei heavier than iron, thought to be synthesized in the merger of two compact objects1–4. Over the first few days, the kilonova evolution is dominated by a large number of radioactive isotopes contributing to the heating rate2,5. On timescales of weeks to months, its behaviour is predicted to differ depending on the ejecta composition and the merger remnant6–8. Previous work has shown that the kilonova associated with gamma-ray burst 230307A is similar to kilonova AT2017gfo (ref. 9), and mid-infrared spectra revealed an emission line at 2.15 micrometres that was attributed to tellurium. Here we report a multi-wavelength analysis, including publicly available James Webb Space Telescope data9 and our own Hubble Space Telescope data, for the same gamma-ray burst. We model its evolution up to two months after the burst and show that, at these late times, the recession o