How Many Planets?

ESO's 3.6 meter telescope

Apr 04, 2012 A European Southern Observatory study claims there are billions of rocky planets in the Milky Way. Human beings have wondered about other planets for centuries. “Are we alone?” is probably one of the earliest questions after “where do we come from?” According to a recent publication from…

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Galactic Umbilicus

The Fornax Dwarf Galaxy orbits the Milky Way

Apr 3, 2012 The Milky Way is connected to the rest of the Universe. According to a recent press release, astronomers have found “…evidence for the cosmic thread that connects us to the vast expanse of the Universe.” By examining the positions of dwarf galaxies and globular clusters around our…

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Saturn’s Auroral Ovals

Mar 30, 2012 Astrophysicists are beginning to acknowledge the role that electricity plays in space. The Cassini-Huygens mission (now called Cassini-Equinox) was launched from Cape Canaveral on October 15, 1997. Its primary mission is the exploration of the Saturnian system, including Saturn’s atmosphere, its rings, its magnetosphere and a number…

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Star-Forming Nebulae

Mar 29, 2012 What drives star formation in various nebulae? Australian astronomer Colin Stanley Gum compiled an extensive catalog of nebulae before his death in 1960. A Study of Diffuse Southern H-alpha Nebulae comprises 85 images that reveal intense activity within a variety of objects and structures embedded in them: extreme ultraviolet and X-ray…

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Bright Spots on Vesta

March 28, 2012 Are the bright crater rims and striations on Vesta the mark of discharge “vents”? Are asteroids and comets close cousins in the Solar System’s family? Comets are usually called “dirty snowballs” in the scientific press, although missions like Giotto and Deep Impact observed them to be blackened,…

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Sub-Europa

Mar 27, 2012 Could an ocean of liquid water exist on Europa? According to a recent press release, “Sending a submarine to the bottom of the ocean on Jupiter’s icy moon Europa is the most exciting potential mission in planetary science…” Is it a forlorn hope? Europa is the fourth…

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