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Hace 1 día · Scientists have discovered the elusive properties hidden within promethium, a rare earth element that has remained largely unexplored since its discovery 80 years ago.. This landmark research, published in the journal Nature, marks a significant advance in rare earth studies and has the potential to rewrite chemistry textbooks.. Promethium’s 80-year scientific journey
8 de may. de 2024 · Black holes - what are they really? Learn this and more with “Astro-Investigates,” the video series that explores and explains big astrophysics topics with t...
Hace 2 días · An extinction event (also known as a mass extinction or biotic crisis) is a widespread and rapid decrease in the biodiversity on Earth.Such an event is identified by a sharp fall in the diversity and abundance of multicellular organisms.It occurs when the rate of extinction increases with respect to the background extinction rate and the rate of speciation.
Hace 4 días · Major impact events have significantly shaped Earth's history, having been implicated in the formation of the Earth–Moon system, the evolutionary history of life, the origin of water on Earth, and several mass extinctions. Impact structures are the result of impact events on solid objects and, as the dominant landforms on many of the System's solid objects, present the most solid evidence of ...
Hace 2 días · Tokyo, the world's largest city and metropolitan area. A city can be defined by the inhabitants of its demographic population, as by metropolitan area, or labour market area. UNICEF defines metropolitan area as follows: A formal local government area comprising the urban area as a whole and its primary commuter areas, typically formed around a city with a large concentration of people (i.e., a ...
Hace 4 días · A diagram depicting the habitable zone boundaries around stars, and how the boundaries are affected by star type.This plot includes Solar System planets (Venus, Earth, and Mars) as well as especially significant exoplanets such as TRAPPIST-1d, Kepler-186f, and our nearest neighbor Proxima Centauri b.. In astronomy and astrobiology, the habitable zone (HZ), or more precisely the circumstellar ...
17 de may. de 2024 · The Art of Middle Earth. J. R. R. Tolkien, Conversation with Smaug, 1937, The Morgan Library & Museum, New York, NY, USA. What began as illustrations to accompany stories for his children and his own concept art, later turned into some of the most beloved fantasy works of all time. However, a large portion of Tolkien’s illustrations stayed ...
