Black Holes
... Cygnus X-1 was the subject of a 1974 friendly wager between Stephen Hawking and a fellow physicist Kip Thorne, with Hawking betting that the source was not a black hole. In 1990, he conceded defeat. [VIDEO: Final Nail in Stephen Hawking's Cygnus X-1 Bet?] Miniature black holes may have formed immedi ...
... Cygnus X-1 was the subject of a 1974 friendly wager between Stephen Hawking and a fellow physicist Kip Thorne, with Hawking betting that the source was not a black hole. In 1990, he conceded defeat. [VIDEO: Final Nail in Stephen Hawking's Cygnus X-1 Bet?] Miniature black holes may have formed immedi ...
ASTRONOMY 130
... It is easier to locate a celestial object if some prominent constellation or asterism can be found and used as a reference point. Ursa Major (the Big Dipper) serves as a good reference point for the north circumpolar constellations. Locate the Big Dipper. Begin with the star at the tip of the handle ...
... It is easier to locate a celestial object if some prominent constellation or asterism can be found and used as a reference point. Ursa Major (the Big Dipper) serves as a good reference point for the north circumpolar constellations. Locate the Big Dipper. Begin with the star at the tip of the handle ...
docx - STAO
... Light energy dissipates (spreads out) as it travels from its source. You could briefly discuss the idea of the inverse square law that light obeys: as distance from the light source increases (Fig.2), the area covered by that light increases with the square of the distance. Since the same quantity o ...
... Light energy dissipates (spreads out) as it travels from its source. You could briefly discuss the idea of the inverse square law that light obeys: as distance from the light source increases (Fig.2), the area covered by that light increases with the square of the distance. Since the same quantity o ...
High molecular gas fractions in normal massive star
... Stars form from cold molecular interstellar gas. As this is relatively rare in the local Universe, galaxies like the Milky Way form only a few new stars per year. Typical massive galaxies in the distant Universe formed stars an order of magnitude more rapidly1,2. Unless star formation was significan ...
... Stars form from cold molecular interstellar gas. As this is relatively rare in the local Universe, galaxies like the Milky Way form only a few new stars per year. Typical massive galaxies in the distant Universe formed stars an order of magnitude more rapidly1,2. Unless star formation was significan ...
Exercise G1: Our Home Galaxy, the Milky Way
... Question 5: The Solar System is embedded within the galaxy. Why does the Milky Way appear as a narrow band of light instead of appearing as faint but evenly distributed light across the entire sky? a. The galaxy is flattened and we view it edge on, from its interior. b. We can only see stars in ...
... Question 5: The Solar System is embedded within the galaxy. Why does the Milky Way appear as a narrow band of light instead of appearing as faint but evenly distributed light across the entire sky? a. The galaxy is flattened and we view it edge on, from its interior. b. We can only see stars in ...
Lecture12
... Cepheid variable stars are very luminous and can be observed over very large distances. Why are such stars important to astronomers? A. They confirm the theory of nuclear fusion as the energy source for stars. B. They can be used as distance indicators because their luminosity can be determined fro ...
... Cepheid variable stars are very luminous and can be observed over very large distances. Why are such stars important to astronomers? A. They confirm the theory of nuclear fusion as the energy source for stars. B. They can be used as distance indicators because their luminosity can be determined fro ...
1 Intro to Astronomy
... onslaught of subatomic particles from the sun 150 million kilometers away ...
... onslaught of subatomic particles from the sun 150 million kilometers away ...
AMUSE-Virgo Super-massive black holes vs. nuclear star clusters: the X-ray view
... Stellar Nuclear ...
... Stellar Nuclear ...
Low-Mass Star Formation Triggered by Supernova in Primordial
... low temperature gas ⇒ small Jeans mass ⇒ low mass star formation In early Universe (no dust, no metal), the gas cools to about 300-500K ...
... low temperature gas ⇒ small Jeans mass ⇒ low mass star formation In early Universe (no dust, no metal), the gas cools to about 300-500K ...
Round 1 – Physics – multi choice 1) In 1921 Albert Einstein was
... 9) The charged particles entering the Earth’s upper atmosphere, which cause the aurorae at the Earth’s magnetic north and south poles, originate from exactly what phenonemon? (Many answers were accepted for this question) ...
... 9) The charged particles entering the Earth’s upper atmosphere, which cause the aurorae at the Earth’s magnetic north and south poles, originate from exactly what phenonemon? (Many answers were accepted for this question) ...
Science Implications of Various Servicing Options
... What types of galactic halos and outflowing winds do star-forming galaxies produce? How were the chemical elements for life created in massive stars and supernovae? How do stars and planetary systems form from dust grains in molecular clouds? What is the composition of planetary atmospheres and come ...
... What types of galactic halos and outflowing winds do star-forming galaxies produce? How were the chemical elements for life created in massive stars and supernovae? How do stars and planetary systems form from dust grains in molecular clouds? What is the composition of planetary atmospheres and come ...
Siderius Nuntius… Light and the Science of Astronomy
... Light is the only information we get from most astronomical objects. To understand these objects, we need to understand the physics of light and how it is produced. ...
... Light is the only information we get from most astronomical objects. To understand these objects, we need to understand the physics of light and how it is produced. ...
Document
... approximately 1044 J of energy. The supernova was approximately 2 x107 light years distant. (i) Calculate the distance in parsecs. ...
... approximately 1044 J of energy. The supernova was approximately 2 x107 light years distant. (i) Calculate the distance in parsecs. ...
Y13 Cosmology HW booklet
... approximately 1044 J of energy. The supernova was approximately 2 x107 light years distant. (i) Calculate the distance in parsecs. ...
... approximately 1044 J of energy. The supernova was approximately 2 x107 light years distant. (i) Calculate the distance in parsecs. ...
13 The Family of Stars
... a pattern begins to form: These are the 80 closest stars to us; note the dashed lines of constant radius. The darkened curve is called the main sequence because this is where most stars are. The white dwarf region is also indicated; these stars are hot but not very luminous because they are qu ...
... a pattern begins to form: These are the 80 closest stars to us; note the dashed lines of constant radius. The darkened curve is called the main sequence because this is where most stars are. The white dwarf region is also indicated; these stars are hot but not very luminous because they are qu ...
1st Semester Earth Science Review 2014-15
... ____ 50. By analyzing the light that a star emits, astronomers can determine a. the motion of a star. b. the composition and temperature of a star. c. the size and weight of a star. d. the galaxy that the star belongs to. ____ 51. Circumpolar stars in the Northern Hemisphere appear to circle a. the ...
... ____ 50. By analyzing the light that a star emits, astronomers can determine a. the motion of a star. b. the composition and temperature of a star. c. the size and weight of a star. d. the galaxy that the star belongs to. ____ 51. Circumpolar stars in the Northern Hemisphere appear to circle a. the ...
GCSE Science Examination Command Words and Examples to
... This trial involved large numbers so that would have given valid results. It was also a good trial of the general population because if poor uneducated women could make it work it would be reliable. However, the trial was not very ethical by today’s standards because we don’t know that the women gav ...
... This trial involved large numbers so that would have given valid results. It was also a good trial of the general population because if poor uneducated women could make it work it would be reliable. However, the trial was not very ethical by today’s standards because we don’t know that the women gav ...
Slides from the first lecture
... Nuclear energy: fusion • In contrast with chemical reactions, nuclear reactions (which change one type of nucleus into another) typically release energies in the MeV range, 1 million times larger. • E.g. Assume the Sun was originally 100% hydrogen, and converted the central 10% of H into helium. • ...
... Nuclear energy: fusion • In contrast with chemical reactions, nuclear reactions (which change one type of nucleus into another) typically release energies in the MeV range, 1 million times larger. • E.g. Assume the Sun was originally 100% hydrogen, and converted the central 10% of H into helium. • ...
Star formation
Star formation is the process by which dense regions within molecular clouds in interstellar space, sometimes referred to as ""stellar nurseries"" or ""star-forming regions"", collapse to form stars. As a branch of astronomy, star formation includes the study of the interstellar medium (ISM) and giant molecular clouds (GMC) as precursors to the star formation process, and the study of protostars and young stellar objects as its immediate products. It is closely related to planet formation, another branch of astronomy. Star formation theory, as well as accounting for the formation of a single star, must also account for the statistics of binary stars and the initial mass function.In June 2015, astronomers reported evidence for Population III stars in the Cosmos Redshift 7 galaxy at z = 6.60. Such stars are likely to have existed in the very early universe (i.e., at high redshift), and may have started the production of chemical elements heavier than hydrogen that are needed for the later formation of planets and life as we know it.