For the hypereutectoid composition shown by the vertical green bar the material enters the two phase austenite + cementite zone prior to cooling through the eutectoid temperature. While it cools ...

Because of the low carbon content the martensite is relatively dispersed. In this tempering process, martensite precipitates Fe 3 C in an a-iron matrix and the micrographs show how the cementite phase ...

Jamie Carter is an award-winning reporter who covers the night sky. Globular clusters like this one, Omega Centauri, are very dense groupings of up to a million stars ... [+] in a sphere ...

The Hubble Space Telescope captures imagery of globular cluster NGC 6325. Credit: Space.com | footage courtesy: ESA/Hubble & NASA, E. Noyola, R. Cohen | edited by Steve Spaleta Hurricane center ...

The broadcast formed part of the ceremonies held to mark a major upgrade to the Arecibo Radio Telescope. The transmission consisted of a simple, pictorial message, aimed at our putative cosmic ...

Neanderthals had a long, low skull (compared to the more globular skull of modern humans) with a characteristic prominent brow ridge above their eyes. Their face was also distinctive. The central part ...