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Biologists report the discovery of the oldest known skin, fossilized about 289 million years ago, and possibly the skin from an ancient reptile. [ 22 ] [ 23 ] Scientists report the discovery of Tyrannosaurus mcraeensis , an older species of Tyrannosaurus that lived 5-7 million years before Tyrannosaurus rex , and which may be fundamentally ...
For example, the light-second, useful in astronomy, telecommunications and relativistic physics, is exactly 299 792 458 metres or 1 / 31 557 600 of a light-year. Units such as the light-minute, light-hour and light-day are sometimes used in popular science publications.
The first aurora beyond the Solar System is reported, on a brown dwarf 18 light years from Earth. [323] Astronomers report the discovery of HD 219134 b, a rocky exoplanet, due to its size of 1.6 Earth and density of 6 g/cm 3, that is the closest such exoplanet to Earth, at 21.25 light-years away. [324] [325]
A science fair or engineering fair is an event hosted by a school that offers students the opportunity to experience the practices of science and engineering for themselves. In the United States, the Next Generation Science Standards makes experiencing the practices of science and engineering one of the three pillars of science education.
Astronomers report the discovery of giant "geysers" of charged particles emanating from the core of the Milky Way Galaxy. These outflows, which extend as far as 50,000 light-years from the galactic plane, are thought to be fuelled by intense star formation. [3] [4] LG Electronics releases the first commercial OLED television.
Multiples of the light-second can be defined, although apart from the light-year, they are more used in popular science publications than in research works. For example: A light-minute is 60 light-seconds, and so the average distance between Earth and the Sun is 8.317 light-minutes.
A list of future observable astronomical events. [1] These are by no means all events, but only the notable or rare ones. In particular, it does not include solar eclipses or lunar eclipses unless otherwise notable, as they are far too numerous to list (see below for articles with lists of all these).
Was there ever a collision of the Earth with another planet Theia, giving birth to the Moon? [1] There is compelling evidence, such as measures of a shorter duration of the Earth's rotation and lunar month in the past, pointing to a Moon much closer to Earth during the early stages of the Solar System.