December Gallery

Red dwarf star

Red dwarf star. Artwork representing the intense activity of a red dwarf star. These are among the least massive stars in the universe ranging from 0.1 to 0.7 solar masses. The star shown here belongs to a subclass of red dwarf stars, known as the flare stars, which are characterised by frequent (3-4 per hour) flares. These are seen as sudden brightenings with a typical rising time between 1s and 1min and a slower fading time between 1min and 1 hour. During a flare, filaments of gas in the atmosphere are accelerated outwards with speeds up to 1000km/s. Such speeds are greater than the escape velocity and therefore the matter ejected will be lost from the parent star

© JULIAN BAUM/SCIENCE PHOTO LIBRARY

24 Dec 1992

© Mirrorpix

1990s, Action, Boxer, Boxing, Fighter, Ring, Training

The Princess of Wales, Princess Diana, in her capacity as Patron

The Princess of Wales, Princess Diana,
in her capacity as Patron, attends "A Night Before Christmas" production by Chickenshed Theatre at the London Palace Theatre.
Pictured meeting the cast and crew of The Chickenshed Theatre. 14th December 1992

© Mirrorpix

1990s, 1992, 20th Century, Attending, Charity, Chicken Shed Theatre Company, Chickenshed, Children, Event, Patron, Princess Diana, Princess Of Wales, Royal, Royals, Royalty