Published on February 22, 2009
Labeled All-sky View
Great Hercules Cluster (M13) – T1 hm Globular cluster in constellation Hercules Distance: 25,000 LY Size: about 120 LY Age: about 12-14 billion years Contains about 600,000 solar masses (probably around 100,000 very large stars) Discovered by Edmond Halley in 1714, and later added to Messier’s list
Sunflower Galaxy (M63) – T1 hm Spiral galaxy in constellation Canes Venatici Distance: 30 million LY Size: 100,000 LY Contains about 140 billion solar masses Included by Lord Rosse in his 1850 list of 14 “nebulae” with spiral structure Discovered by Pierre Mechain in 1779 - the first object added by Mechain to Messier’s list
C at’s Eye Nebula (NGC 6543) – T2 hm Planetary nebula in constellation Draco Distance: 3000 LY Central star is a Wolf-Rayet star – a very hot star (temperature around 100,000 K) in last stages of life, ejecting mass at high speeds (several thousand km/sec) Complex structure includes two expanding bubbles that are perpendicular to each other, surrounded by 9 spherical shells Discovered by William Herschel in 1786
Mechain’s Galaxy (M106) – T2 hm Barred spiral galaxy in constellation Canes Venatici Distance: 25 million LY Size: 130,000 LY “ Active” galaxy with a central black hole of 40 million solar masses Between the two visible arms are two additional arms of hot ionized gas, with no stars, visible in x-rays Discovered by Pierre Mechain in 1781
Spindle Galaxy (M102) – T2 hm Lenticular galaxy in constellation Draco Distance: 50 million LY Size: 90,000 LY Lenticular galaxies have a disk and central bulge like a spiral, but no spiral arms; they contain mostly old stars, with little gas or dust This galaxy was apparently discovered by Pierre Mechain in 1781; independently discovered by William Herschel in 1788
Ghost of Jupiter (NGC 3242) – T2 hm Planetary nebula in constellation Hydra Distance: around 2000 LY Size: around 0.4 LY Central star has a temperature around 60,000 K and a mass less than half of the sun Discovered by William Herschel in 1785
Sky Safari – A Slooh Production by Kochava Yerushalmit
1. Sky Safari: Andromeda by Kochava Yerushalmit . 2. Sky Safari: Andromeda by Kochava Yerushalmit . 3. Sky Safari: Andromeda by Kochava Yerushalmit Labeled ...
William Huggins and Margaret Lindsay Murray, ... The early work of Lewis Morris Rutherfurd; that of Sir William and Lady Huggins; ...
Collections that are specifically matched to Hamilton Trust Literacy Unit Plans for each school term.
How it works: 1. Register a free 1 month Trial Account. 2. Download as many books as you like (Personal use) 3. Cancel the membership at any time if not ...
Storybooks and Picture books ... Margaret K. Mc Elderry Books, ... Beverly. 1978. Henry Huggins. New York: William Morrow. Clements, ...
Welcome to the Home Warranty Canada Official Website. For over almost two decades, ...