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Cassiopeia

Cassiopeia is a prominent northern constellation named after the vain queen of Greek mythology. Notable for its distinctive “W” asterism formed by five bright stars, it lies along the plane of the Milky Way and contains many deep-sky objects, including the supernova remnant Cassiopeia A and star‑forming regions such as IC 63.

Source: nasa.gov

APODs including "Cassiopeia"

Long Lovejoy and Little Dumbbell

27/02/2015

Long Lovejoy and Little Dumbbell
Image Credit: CARA Project / NASA APOD

Buffeted by the solar wind, Comet Lovejoy's crooked ion tail stretches over 3 degrees across this telescopic field of view, recorded on February 20. The starry background includes awesome bluish star Phi Persei below, and pretty planetary nebula M76 just above Lovejoy's long tail. Also known as the Little Dumbbell Nebula, after its brighter cousin M27 the Dumbbell Nebula, M76 is only a Full Moon's width away from the comet's greenish coma. Still shining in northern hemisphere skies, this Comet Lovejoy (C/2014 Q2) is outbound from the inner solar system some 10 light-minutes or 190 million kilometers from Earth. But the Little Dumbbell actually lies over 3 thousand light-years away. Now sweeping steadily north toward the constellation Cassiopeia Comet Lovejoy is fading more slowly than predicted and is still a good target for small telescopes.