Space Unit - Questions and Answers
... 12. Does the Sun use hydrogen to produce energy from nuclear fusion? Yes, the Sun produces energy through a process called nuclear fusion where Hydrogen nuclei fuse to form Helium nuclei. The Sun is about 75% Hydrogen and 25% Helium. ...
... 12. Does the Sun use hydrogen to produce energy from nuclear fusion? Yes, the Sun produces energy through a process called nuclear fusion where Hydrogen nuclei fuse to form Helium nuclei. The Sun is about 75% Hydrogen and 25% Helium. ...
DO NOT WRITE ON THIS PAPER Standard 1 Objective 1 Study
... 20.Meteorites that fall to Earth support the nebular theory because the meteorites are the same age and composition as Earth. 21.A rotating cloud of gas and dust from which Earth’s solar system formed is called a solar nebula. 22.Copernicus proposed a heliocentric model of the solar system in which ...
... 20.Meteorites that fall to Earth support the nebular theory because the meteorites are the same age and composition as Earth. 21.A rotating cloud of gas and dust from which Earth’s solar system formed is called a solar nebula. 22.Copernicus proposed a heliocentric model of the solar system in which ...
Document
... • Newton’s Laws of gravity only depend on mass and separation. • Kepler’s Laws of orbits only depend on mass and separation. • At 1 AU, force of gravity from a 1 Msol B.H. is same as from a 1 Msol star. • At surface of each, force of gavity is very ...
... • Newton’s Laws of gravity only depend on mass and separation. • Kepler’s Laws of orbits only depend on mass and separation. • At 1 AU, force of gravity from a 1 Msol B.H. is same as from a 1 Msol star. • At surface of each, force of gavity is very ...
lecture19 - Stony Brook University
... is not a pulsar. It was discovered by Stony Brook astronomers. It is moving across the sky at 110 km/s, faster than typical for stars. The high speed is probably due to a kick given during the supernova explosion. This neutron star is seen as an X-ray source. ...
... is not a pulsar. It was discovered by Stony Brook astronomers. It is moving across the sky at 110 km/s, faster than typical for stars. The high speed is probably due to a kick given during the supernova explosion. This neutron star is seen as an X-ray source. ...
Characteristics of Stars ppt.
... Magnitude is the brightness of a star, expressed as either absolute (how bright the star actually is) or apparent (how bright it seems to be from Earth). ...
... Magnitude is the brightness of a star, expressed as either absolute (how bright the star actually is) or apparent (how bright it seems to be from Earth). ...
Deep Space Mystery Note Form 2
... A supernova can also be created when a white dwarf star has drawn enough material from a companion star to raise its core temperature enough to ignite carbon fusion. The violent explosion of a massive star makes the expanding gases to glow briefly and brightly. During this short interval, a superno ...
... A supernova can also be created when a white dwarf star has drawn enough material from a companion star to raise its core temperature enough to ignite carbon fusion. The violent explosion of a massive star makes the expanding gases to glow briefly and brightly. During this short interval, a superno ...
ASTRONOMY 120: GALAXIES AND THE UNIVERSE HOMEWORK
... giant phase, • and that 74% of the original mass of the star is in the form of Hydrogen. There are a few different ways you could conceptualize this problem, so your procedure might be correct even if it doesn’t look exactly like this one. The length of the Sun’s red giant phase will be dictated by ...
... giant phase, • and that 74% of the original mass of the star is in the form of Hydrogen. There are a few different ways you could conceptualize this problem, so your procedure might be correct even if it doesn’t look exactly like this one. The length of the Sun’s red giant phase will be dictated by ...
How do the most massive galaxies constrain theories of
... remove all remaining gas after major mergers shut off cooling/SF when Mh>Mcrit shut off star formation when M*>Mcrit shut off star formation when M*,bulge>Mcrit ...
... remove all remaining gas after major mergers shut off cooling/SF when Mh>Mcrit shut off star formation when M*>Mcrit shut off star formation when M*,bulge>Mcrit ...
SR Stellar Properties
... 6. Where would you put our Sun on the “size” spectrum? ________________________ 7. Astronomers can determine the __________________ ________________ of a star by observing the star with a spectrograph. 8. If Rigel and Betelgeuse were the same size, explain why Rigel would appear brighter. __________ ...
... 6. Where would you put our Sun on the “size” spectrum? ________________________ 7. Astronomers can determine the __________________ ________________ of a star by observing the star with a spectrograph. 8. If Rigel and Betelgeuse were the same size, explain why Rigel would appear brighter. __________ ...
NAME
... ____ 20. What type of standard candle is used to determine distances to globular clusters? a. O-type main-sequence stars b. Cepheid variable stars c. T Tauri stars d. Type I supernovae e. RR Lyrae stars ____ 21. By comparing globular clusters, you find that Cluster A’s RR Lyrae stars are 100 times f ...
... ____ 20. What type of standard candle is used to determine distances to globular clusters? a. O-type main-sequence stars b. Cepheid variable stars c. T Tauri stars d. Type I supernovae e. RR Lyrae stars ____ 21. By comparing globular clusters, you find that Cluster A’s RR Lyrae stars are 100 times f ...
Document
... At the heart of the Orion Nebula lies a complex of molecular clouds where abundant star formation is occurring today. The clouds are illuminated by a flood of ultraviolet light emitted by four bright stars, collectively called the Trapezium. ...
... At the heart of the Orion Nebula lies a complex of molecular clouds where abundant star formation is occurring today. The clouds are illuminated by a flood of ultraviolet light emitted by four bright stars, collectively called the Trapezium. ...
Main Sequence Stars and their Lifetimes
... 3. Temperature (from stellar spectrum – Blackbody curve) 4. Radius ...
... 3. Temperature (from stellar spectrum – Blackbody curve) 4. Radius ...
here. - SUNY Oswego
... In the period-amplitude relations there is evidence in a curve parallel to the bulk of the data that may suggest there are evolved stars in the data moving off the horizontal branch that RR Lyraes occupy. Below are period amplitude relations in the SMC and LMC that are fitted with a curve of data fr ...
... In the period-amplitude relations there is evidence in a curve parallel to the bulk of the data that may suggest there are evolved stars in the data moving off the horizontal branch that RR Lyraes occupy. Below are period amplitude relations in the SMC and LMC that are fitted with a curve of data fr ...
The Earth
... It takes 8 minutes for light to reach us from the Sun. A light-year is the distance travelled by light in 1 year. ...
... It takes 8 minutes for light to reach us from the Sun. A light-year is the distance travelled by light in 1 year. ...
MSD EOC S.G. Sem 2
... 45. The phase of the moon depends on the how much of the sunlit side of the moon is observed. 46. Stars are spinning clouds of gases that radiate heat and light through nuclear fusion reactions, changing hydrogen to helium. 47. Stars are made by the gravitational attraction of gases in a nebula. 48. ...
... 45. The phase of the moon depends on the how much of the sunlit side of the moon is observed. 46. Stars are spinning clouds of gases that radiate heat and light through nuclear fusion reactions, changing hydrogen to helium. 47. Stars are made by the gravitational attraction of gases in a nebula. 48. ...
Lecture 9
... darker at the edge (limb) than at the centre • The light rays that we see from the edge of the Sun must originate from higher in the atmosphere (since otherwise they would have to travel through a greater optical depth to reach us). ...
... darker at the edge (limb) than at the centre • The light rays that we see from the edge of the Sun must originate from higher in the atmosphere (since otherwise they would have to travel through a greater optical depth to reach us). ...
lecture25
... 3) supernovae destroy the less massive stars in the spiral arms 4) there is too high a density in the spiral arms to create low-mass stars ...
... 3) supernovae destroy the less massive stars in the spiral arms 4) there is too high a density in the spiral arms to create low-mass stars ...
Describing the Solar System File
... that of mars and Jupiter are thousands of asteroids. Asteroids could be the remains of a smashed up planet or moon. Asteroids are lumps of rock ranging from a tennis ball in size up to 700km across. It is thought that Jupiter’s gravity keeps the asteroids smeared out around this belt and stops ...
... that of mars and Jupiter are thousands of asteroids. Asteroids could be the remains of a smashed up planet or moon. Asteroids are lumps of rock ranging from a tennis ball in size up to 700km across. It is thought that Jupiter’s gravity keeps the asteroids smeared out around this belt and stops ...
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.