Bronze medal commemorating the 150th annive

Byzantine bronze weights, c 600-699 AD.

Post-flare loop above the Sun's surface, ultraviolet photograph from Skylab, 1973.

Post-flare loop above the Sun's surface, false colour photograph by Skylab, 1973.

Large solar flare seen in extreme ultraviolet light, 1973.

Thirteen small bronze Elephant weights, 17th-18th century.

Thirteen small bronze Elephant weights, 17th-18th century.

Solar flare eruption in false colour, photographed from Skylab, 1973.

Solar flare seen in helium 3 light, photographed from Skylab, 1973.

Solar flare eruption in extreme ultraviolet light, photographed from Skylab, 1973.

False colour image of a solar flare photographed from Skylab, 1973

Mortar and pestle and Medicine Man's box, native American, c 1860-1930.