Images Dated 20th May 2003

Halo planet

Halo planets. Artwork showing the sky of a planet in the outer halo of a galaxy (seen from far left to upper right). The planet's moon is seen at centre left. This might be part of the planetary system of a brown dwarf, an object that forms like a star but does not emit light because it is too small to sustain nuclear fusion. Concentrations of dim objects such as brown dwarfs in galactic halos are one candidate for "dark matter", mass that is predicted by theory but cannot be observed. Such objects are termed MACHOs (Massive Astronomical Compact Halo Objects)

© JOE TUCCIARONE/SCIENCE PHOTO LIBRARY

Deep sea Anglerfish {Himantolophus sp} female with lure projecting from head to attract prey

Deep sea Anglerfish {Himantolophus sp} female with lure projecting from head to attract prey, Atlantic ocean. Anglerfish have small poorly developed eyes but detect movement and prey through a well defined lateral line system visible as a line of silvery

© www.naturepl.com

Anglerfish, Atlantic, Deepsea, Eyes, Females, Fish, Horizontal, Lophiiformes, Marine, Ocean, Osteichthyes, Portraits, Profile, Teeth, Vertebrates

Yeast, Saccharomyces cerevisiae

Yeast cells. Coloured transmission electron micrograph (TEM) of a section through yeast cells, Saccharomyces cerevisiae, including one that is budding. Cytoplasm is red, vacuoles yellow, cell walls green and nuclei dark blue. Also known as baker's or brewer's yeast, this fungus consists of single vegetative cells. The larger "mother" cell (centre left) is reproducing asexually by budding off a daughter cell (bottom centre). S. cerevisiae ferments certain sugars, producing alcohol and carbon dioxide in the process. It is used in the brewing of beer, the production of wine and in the baking of leavened bread, as it causes the dough to rise. Magnification: x5000 at 35mm size

© DR GOPAL MURTI/SCIENCE PHOTO LIBRARY