Spiral galaxies make up about 70 percent of all observed galaxies, some with large central bulges and tightly wound spiral arms like a fast-spinning ice skater, some with more wide-open arms and smaller bulges and some in various in-between states. NGC 2008, seen here in an image captured by the Hubble Space Telescope, is an Sc galaxy, with S signifying its spiral form and c indicating a small central bulge. The galaxy, located about 425 million miles from Earth in the constellation Pictor, was discovered in 1834 by astronomer John Herschel.
In this NASA/ESA Hubble Space Telescope image we see the central Wolf-Rayet star known as Hen 2-427 — more commonly known as WR 124 — surrounded by the nebula M1-67. Both objects are found in the constellation of Sagitta some 15,000 light-years away. The hot clumps of gas ejected by the star into space are travelling at over 150,000 kilometres per hour.
For the first time astronomers were able to analyse the atmosphere of a super-Earth exoplanet. Using data gathered with the Hubble Space Telescope and new analysis techniques, the exoplanet 55 Cancri e some 40 light-years away is revealed to have an atmosphere consists mainly of hydrogen and helium without any indications of water vapour.
Astronomers using NASA’s Hubble Space Telescope have measured the rotation rate of an extreme exoplanet by observing the varied brightness in its atmosphere. The planet, called 2M1207b, is about four times more massive than Jupiter and is dubbed a “super-Jupiter.” This is the first measurement of the rotation of a massive exoplanet using direct imaging.