NASA has adjusted the targeted dates for a cryogenic demonstration test and to the next launch opportunities for Artemis I, the first integrated flight test of the Space Launch System rocket and Orion spacecraft beyond the Moon. The agency will conduct... Continue Reading →
Earlier this month, the Sun exhibited one of the longer filaments on record. Visible as the bright curving streak around the image center, the snaking filament's full extent was estimated to be over half of the Sun's radius -- more than... Continue Reading →
Jan Weenix was born in Amsterdam, the son of Jan Baptist Weenix, by whom he was taught. He worked in Utrecht, Amsterdam and Germany; he died in Amsterdam. He was a portrait and genre painter, and a painter of dead game.
Who Was Queen Elizabeth II? Queen Elizabeth II became queen on February 6, 1952, and was crowned on June 2, 1953. She was the mother of Prince Charles, heir to the throne, as well as the grandmother of Princes William and Harry. As the... Continue Reading →
What are those red filaments in the sky? They are a rarely seen form of lightning confirmed only about 35 years ago: red sprites. Research has shown that following a powerful positive cloud-to-ground lightning strike, red sprites may start as 100-meter balls of ionized air that shoot down from about 80-km... Continue Reading →
A new Tel Aviv University study rejects assertions, according to which the origin of the COVID-19 outbreak is in bats. According to the study, bats have a highly effective immune system that enables them to deal relatively easily with viruses... Continue Reading →
Excitons are quasiparticles that are formed in insulators or semiconductors when an electron is promoted to a higher energy band, leaving a positively charged hole behind. At the presence of strong Coulomb interaction, electrons and holes (vacancies left by electron... Continue Reading →
Frans Snyders , artist who was the most-noted 17th-century painter of animals. His subjects included still life of markets and pantries (featuring both live animals and dead game), animals in combat, and hunting scenes. A highly skilled painter who was... Continue Reading →
A person’s blood type may be linked to their risk of having an early stroke, according to a new meta-analysis led by University of Maryland School of Medicine (UMSOM) researchers. Findings were published in the journal Neurology. The meta-analysis included all available data... Continue Reading →
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