Astronomy - February 2014

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PERSEUS CAMELOPARDALIS 1 4 2 3 Path of Comet ISON Feb 1 4 7 10 13 NGC 1545 NGC 1528 h 1° N E Comet ISON (C/2012 S1) February 24, ...

10° AQUILA OPHIUCHUS SCORPIUS SAGITTARIUS Shaula Altair Venus Mid-February, 45 minutes before sunrise Looking southeast 0.5° ζ T ...

Stellar science New light on our S In the late stages of stellar evolution, a Sun- like star’s envelope is blown away into the s ...

WWW.ASTRONOMY.COM 45 IN the future, Earth will be inside the Sun. That new location will be a result of the Sun’s evolutionary p ...

Blue White Yellow Orange Red 47 Tucanae white dwarfs Background Small Magellanic Cloud stars 47 Tucanae hydrogen-burning stars ( ...

Blue giant Sun White dwarf 300 400 500 600 700 800 Sun Blue giant Hγ Hβ Hα Hδ Hε Hζ Hη White dwarf Hγ Hβ Hα Hδ Hε Hζ Hη Ultravio ...

48 ASTRONOMY t FEBRUARY 2014 My colleagues and I recently used Hubble to observe one of the nearest globular clusters, 47 Tucana ...

0 1 2 3 4 5 6 7 20% 40% 60% 80% 100% Initial mass of hydrogen-burning star (solar masses) Mass loss WWW.ASTRONOMY.COM 49 densiti ...

50 ASTRONOMY t FEBRUARY 2014 Comet ISON’s opening act COMET OF THE CENTURY? C omet ISON (C/2012 S1) first appeared September 21, ...

WWW.ASTRONOMY.COM 51 FIND MORE IMAGES OF COMET ISON AT http://www.Astronomy.com/ISON. Comet ISON started to show some nice green ...

52 ASTRONOMY t FEBRUARY 2014 Where other astrophotographers fear to tread DARK BEAUTY s a child growing up in rural Utah, I was ...

WWW.ASTRONOMY.COM 53 I had gone from recording with my eyes and memory to recording with a camera, and the difference between wh ...

54 ASTRONOMY t FEBRUARY 2014 In 2007, I saw an image of the Iris Neb- ula (NGC 7023) that showed the beautiful object in detail. ...

WWW.ASTRONOMY.COM 55 that records luminance data. The second is a wide FOV, low-resolution telescope that takes the color data. ...

56 ASTRONOMY t FEBRUARY 2014 Tiny particles in the solar system may answer some of its biggest questions. by Meenakshi Wadhwa TH ...

WWW.ASTRONOMY.COM 57 Some particles even preserve remnants of presolar silicate and organic grains, from which scientists can le ...

58 ASTRONOMY t FEBRUARY 2014 such bodies — the Stardust and Hayabusa missions, respectively. Stardust was a NASA Discovery class ...

WWW.ASTRONOMY.COM 59 (JAXA) launched Hayabusa, originally called MUSES-C, to collect and return samples from the small near-Eart ...

60 ASTRONOMY t FEBRUARY 2014 Te Ra R110 ED Doublet OTA ofers high-quality optics, good portability, and nice styling — all at a ...