DOC - Cool Cosmos
... However, if enough time passes and a galaxy converts all of its available gas into stars and then the stars die out, at that point the galaxy would no longer exist in the form that we are familiar with. There would be almost no light generated by the galaxy and it would be a combination of dust, bla ...
... However, if enough time passes and a galaxy converts all of its available gas into stars and then the stars die out, at that point the galaxy would no longer exist in the form that we are familiar with. There would be almost no light generated by the galaxy and it would be a combination of dust, bla ...
ppt
... with ~ same speed • But this creates a winding dilemma • So density waves must sweep around galaxy, which move more slowly around the galaxy than the matter inside • This crowding promotes stellar birth and recycling of ISM ...
... with ~ same speed • But this creates a winding dilemma • So density waves must sweep around galaxy, which move more slowly around the galaxy than the matter inside • This crowding promotes stellar birth and recycling of ISM ...
The Milky Way Galaxy
... Decorate the galaxy with colours and glitter. Milky Way Facts • The Milky Way galaxy is home to 400 billion stars and our own Sun and Solar System. • It is a barred spiral galaxy. • Scientists think the centre of the galaxy contains a super massive black hole. • The Milky Way is full of dust, ga ...
... Decorate the galaxy with colours and glitter. Milky Way Facts • The Milky Way galaxy is home to 400 billion stars and our own Sun and Solar System. • It is a barred spiral galaxy. • Scientists think the centre of the galaxy contains a super massive black hole. • The Milky Way is full of dust, ga ...
Where is the Solar System in the Universe?
... • Look like giant, flat discs with a bulge in the middle with spiral arms flaring out from the center. • These are typically the largest galaxies. ...
... • Look like giant, flat discs with a bulge in the middle with spiral arms flaring out from the center. • These are typically the largest galaxies. ...
Galaxy Classification - Starry Night Education
... Q uestion 7: Which statement best describes the geometry of the solar system's location within the Milky Way galaxy? a. The plane of the solar system is coincident with the plane of the galaxy. b. The plane of the solar system is perpendicular to that of the Milky Way. c. The plane of the solar syst ...
... Q uestion 7: Which statement best describes the geometry of the solar system's location within the Milky Way galaxy? a. The plane of the solar system is coincident with the plane of the galaxy. b. The plane of the solar system is perpendicular to that of the Milky Way. c. The plane of the solar syst ...
Galaxies Presentation
... amount of gas, and dust. – Most are yellow and red because they do not contain young stars. – Vary in size from small to extremely large ...
... amount of gas, and dust. – Most are yellow and red because they do not contain young stars. – Vary in size from small to extremely large ...
The Discovery of Galaxies
... - elliptical (like a football) - spiral (like a pinwheel) - irregular (like something not regular…) ...
... - elliptical (like a football) - spiral (like a pinwheel) - irregular (like something not regular…) ...
PC2491 Examples 2
... where Ro is the distance from the galactic centre to the Sun, o is the angular velocity of the Sun and (r) is the angular velocity at radius r. An H1 cloud in the galactic plane at l=30o is observed to have a velocity relative to the local standard of rest of +80 km s-1. Assume the galactic rotati ...
... where Ro is the distance from the galactic centre to the Sun, o is the angular velocity of the Sun and (r) is the angular velocity at radius r. An H1 cloud in the galactic plane at l=30o is observed to have a velocity relative to the local standard of rest of +80 km s-1. Assume the galactic rotati ...
Messier 87
Messier 87 (also known as Virgo A or NGC 4486, and generally abbreviated to M87) is a supergiant elliptical galaxy in the constellation Virgo. One of the most massive galaxies in the local universe, it is notable for its large population of globular clusters—M87 contains about 12,000 compared to the 150-200 orbiting the Milky Way—and its jet of energetic plasma that originates at the core and extends outward at least 1,500 parsecs (4,900 light-years), travelling at relativistic speed. It is one of the brightest radio sources in the sky, and is a popular target for both amateur astronomy observations and professional astronomy study.French astronomer Charles Messier discovered M87 in 1781, cataloguing it as a nebulous feature while searching for objects that would confuse comet hunters. The second brightest galaxy within the northern Virgo Cluster, M87 is located about 16.4 million parsecs (53.5 million light-years) from Earth. Unlike a disk-shaped spiral galaxy, M87 has no distinctive dust lanes. Instead, it has an almost featureless, ellipsoidal shape typical of most giant elliptical galaxies, diminishing in luminosity with distance from the centre. Forming around one sixth of M87's mass, the stars in this galaxy have a nearly spherically symmetric distribution, their density decreasing with increasing distance from the core. At the core is a supermassive black hole, which forms the primary component of an active galactic nucleus. This object is a strong source of multiwavelength radiation, particularly radio waves. M87's galactic envelope extends out to a radius of about 150 kiloparsecs (490,000 light-years), where it has been truncated—possibly by an encounter with another galaxy. Between the stars is a diffuse interstellar medium of gas that has been chemically enriched by elements emitted from evolved stars.