Cartwheel galaxy, multi-wavelength image
Cartwheel galaxy, multi-wavelength image. Around 100 million years ago, a smaller galaxy passed directly through the centre of the Cartwheel galaxy. This caused shock waves to propagate out through the galaxy, which caused bursts of star formation. The bright blue ring marks the region where huge, powerful ultraviolet-emitting stars have formed. The inner orange ring is the second wave, but this has far less star formation than the first wave. It is not known if the colliding galaxy was one of the two at lower left. The images were taken in X-rays by the Chandra Space Telescope (purple), in UV by GALEX (blue), in green light by the Hubble Space Telescope, and in infrared by the Spitzer Space Telescope (red).
© Nasa/Jpl-caltech/Science Photo Library
'The British Occupation of Bloemfontein - An Evening Concert', 1900. Creator: A Forestier
'The British Occupation of Bloemfontein - An Evening Concert in Market Square by the Pipers of the Highland Brigade', 1900. British forces entered the Orange Free State and occupied the capital Bloemfontein on 13 March 1900. The Orange River Colony was created after this occupation. From "South Africa and the Transvaal War, Vol. IV", by Louis Creswicke. [T. C. & E. C. Jack, Edinburgh, 1900]
© The Print Collector/Heritage Images
Diagram showing the interaction between female sexual organs and the brain, on one side, the normal reproductive cycle, and on the other, the effect of the contraceptive pill
Diagram showing the interaction between female sexual organs and the brain, on one side, the normal reproductive cycle, and on the other, the effect of the contraceptive pill.
© This content is subject to copyright.
73016440, Activity, Anatomy, Biomedical Illustration, Birth Control Pill, Bleeding, Blood Cell, Bodily Functions, Brain, Cervix, Color Image, Colour Image, Communication, Contraception, Contraceptive, Contraceptive Pill, Control, Diagram, Effects, Eggs, Fallopian Tube, Fallopian Tubes, Female, Female Likeness, Fertile, Fertility, Follicles, Health, Healthcare And Medicine, Horizontal, Hormone, Hormones, Human Beings, Human Body, Human Body Part, Human Brain, Human Egg, Humans, Illustration, Illustration Technique, Interaction, Intervention, Menstrual Cycle, Menstruation, Monthly, No People, Organs, Ovaries, Ovary, Period, Reproduction, Reproductive Cycle, Reproductive Organ, Reproductive System, Sexual Issues, Sexual Organs, Sexuality, Sperm, Square Image, The Pill, Uterus, White Background, Womb, Women