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1 ημέρα πριν · The speed of light in vacuum, commonly denoted c, is a universal physical constant that is exactly equal to 299,792,458 metres per second (approximately 300,000 kilometres per second; 186,000 miles per second; 671 million miles per hour).
3 ημέρες πριν · An aurora (pl. aurorae or auroras), also commonly known as the northern lights (aurora borealis) or southern lights (aurora australis), is a natural light display in Earth's sky, predominantly seen in high-latitude regions (around the Arctic and Antarctic). Auroras display dynamic patterns of brilliant lights that appear as curtains, rays ...
20 ώρες πριν · The Sun is the star at the center of the Solar System. It is a massive, nearly perfect sphere of hot plasma, heated to incandescence by nuclear fusion reactions in its core, radiating the energy from its surface mainly as visible light and infrared radiation with 10% at ultraviolet energies.
3 ημέρες πριν · «Столетняя лампа» ( англ. Centennial Light или Centennial Light Bulb ) — лампа накаливания, находящаяся в пожарной части города Ливермор, Калифорния и, по некоторым сведениям, горящая с 1901 года до настоящего времени с небольшими перерывами [1].
4 ημέρες πριν · The speed of light, sometimes abbreviated as c, is a universal maximum posted speed that causality will enforce. It's the greatest speed at which any known substance or object can travel. Even...
1 ημέρα πριν · ESA Media relations. media@esa.int. An international team of astronomers using the NASA/ESA/CSA James Webb Space Telescope have directly imaged an exoplanet roughly 12 light-years from Earth. While there were hints that the planet existed, it had not been confirmed until Webb imaged it. The planet is one of the coldest exoplanets observed to date.
5 ημέρες πριν · Monogatari shirīzu), è una serie di light novel scritta da Nisio Isin, disegnata dall'illustratore taiwanese Vofan e pubblicata da Kōdansha. La serie è iniziata nel 2005 e al 2023 conta 29 volumi.
