The characteristics measured by semen analysis are only some of the factors in semen quality. One source states that 30% of men with a normal semen analysis actually have abnormal sperm function.
Wisps of dust and gas from the nebula which formed the star can also be seen. Credit: Atlas Image courtesy of 2MASS/UMass/IPAC-Caltech/NASA/NSF. Named for the first of their type observed, T Tauri stars are variable stars which show both periodic and random fluctuations in their brightnesses. They are newly-formed (< 10 million years old) low to intermediate mass stars (< 3 solar masses) with central temperatures too low for nuclear fusion to have started.
Iota Volantis (Iota Volantis) is a star in the constellation of Volans. The star can be located at the coordinates of Declination (-70d 57` 48.5) and Right Ascension(06h 51m 26.98) Based on the spectral type (B7IV), the star is a blue subgiant star. With an apparent magnitude of 5.41, it can be seen in the night sky unaided.