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Hace 11 horas · Bismuth was long considered the element with the highest atomic mass whose nuclei do not spontaneously decay. However, in 2003 it was discovered to be extremely weakly radioactive. The metal's only ... As with lead, bismuth poisoning can result in the formation of a black deposit on the gingiva, known as a bismuth line. ...
Hace 4 horas · A quasar is a special kind of black hole that is pulling in material at such a rapid rate that it produces intense radiation and even powerful jets at times. This particular quasar is known as H1821+643 and is about 3.4 billion light-years away from our planet. Oh, and also, this underachiever weighs about four billion times our Sun.
Hace 11 horas · KYIV, Ukraine -- Moscow launched a large-scale attack on Ukraine’s energy infrastructure Friday, with a mass barrage of 99 drones and missiles hitting regions across the country, Ukraine’s ...
Hace 11 horas · THE SACRED PASCHAL TRIDUUM#GoodFriday of The Lord’s Passion#QuiapoChurch 3PM #OnlineMass | March 29, 2024#BiyernesSantoPagdiriwang ng Pagpapakasakit ng Pangi...
Hace 11 horas · We consider the hypothesis that the sources of dark energy (DE) could be black holes (BHs) or more exotic objects, such as naked singularities or gravastars. We propose a definition of the presence of DE in the Universe and a criterion for what can be considered the source of this dark energy. It is based on the idea of the accelerated expansion of the Universe, which requires antigravity ...
Hace 11 horas · March 29, 2024. By Evrim Yazgin. Researchers have reconstructed the face of Chinese Emperor Wu of Northern Zhou who lived 1,500 years ago. Deep DNA analysis of single nucleotide polymorphisms ...
Hace 11 horas · Polish and allied aircraft were activated early this morning after Russia launched missile strikes on Ukraine, the Operational Command of the Polish armed forces said. Listen to a Daily podcast on ...