Comet Pan-Starrs 12 March 2013
... • PSR B1937+21: second fastest known pulsar, P = 1.5578 msec, ~ 642/sec. The surface of this star is ...
... • PSR B1937+21: second fastest known pulsar, P = 1.5578 msec, ~ 642/sec. The surface of this star is ...
Great Migrations & other natural history tales
... way M_Jeans changes w.r.t. the fragment mass, Hoyle (1953) arrived at a concept of opacity-limited fragmentation. When heat gets trapped by opacity, Jeans mass ...
... way M_Jeans changes w.r.t. the fragment mass, Hoyle (1953) arrived at a concept of opacity-limited fragmentation. When heat gets trapped by opacity, Jeans mass ...
Peer Instruction/Active Learning
... b) Earth would be pulled into the black hole. c) X-‐rays would destroy Earth. d) Earth would be torn apart from the
... b) Earth would be pulled into the black hole. c) X-‐rays would destroy Earth. d) Earth would be torn apart from the
AST 301 Introduction to Astronomy - University of Texas Astronomy
... Becoming a Red Giant (The complete explanation for how a main-sequence star becomes a red giant is complicated, and I’m not really giving you the whole story. But the conclusion is right. Don’t worry if you don’t follow all of the explanation.) When all of the hydrogen in the core of a main-sequenc ...
... Becoming a Red Giant (The complete explanation for how a main-sequence star becomes a red giant is complicated, and I’m not really giving you the whole story. But the conclusion is right. Don’t worry if you don’t follow all of the explanation.) When all of the hydrogen in the core of a main-sequenc ...
Slide 1
... Major Topographic features of the Moon: Highlands = light colored areas (almost as high as Mt. Everest!) Mare (Maria, pl.) = dark smooth areas (ancient beds of lava) Rilles are valleys or trenches. Regolith = soil-like layer ...
... Major Topographic features of the Moon: Highlands = light colored areas (almost as high as Mt. Everest!) Mare (Maria, pl.) = dark smooth areas (ancient beds of lava) Rilles are valleys or trenches. Regolith = soil-like layer ...
ASTR101
... Icy leftovers in the outer solar leftovers in the outer solar system • Some rocky material as well ...
... Icy leftovers in the outer solar leftovers in the outer solar system • Some rocky material as well ...
the stars
... distinguish colors: only the brightest stars are sufficiently luminous to show their real color. Looking at the sky with a binocular or a telescope we see that stars have colors and that these colors can be put in a sequence: from blue to white, yellow, orange and red. Astronomers use spectra to stu ...
... distinguish colors: only the brightest stars are sufficiently luminous to show their real color. Looking at the sky with a binocular or a telescope we see that stars have colors and that these colors can be put in a sequence: from blue to white, yellow, orange and red. Astronomers use spectra to stu ...
Can you figure out which of the stars shown here have planets
... what astronomers expected. It's a big planet, with a mass like Jupiter, but it's located six times closer to its star than Mercury is to the Sun! Astronomers have since found many more such planets, and call them "Hot Jupiters" because of their size and high temperatures. ...
... what astronomers expected. It's a big planet, with a mass like Jupiter, but it's located six times closer to its star than Mercury is to the Sun! Astronomers have since found many more such planets, and call them "Hot Jupiters" because of their size and high temperatures. ...
20 pm - Starmap
... Many deep sky objects like galaxies and clusters will be within reach. Jupiter satellites and Saturn’s rings will also be visible. A spectacular experience for beginners in astronomy... ...
... Many deep sky objects like galaxies and clusters will be within reach. Jupiter satellites and Saturn’s rings will also be visible. A spectacular experience for beginners in astronomy... ...
Document
... 7. A massive star supernova is most likely to occur in a region where A) All the stars are very luminous B) All the stars are very dim C) There are a lot of new stars being born D) All the stars are very old E) None of the above 8. Why is the helium burning stage of a star so much shorter than the h ...
... 7. A massive star supernova is most likely to occur in a region where A) All the stars are very luminous B) All the stars are very dim C) There are a lot of new stars being born D) All the stars are very old E) None of the above 8. Why is the helium burning stage of a star so much shorter than the h ...
Astronomy
... 21. What event is responsible for the ultimate death of the Sun? A) All the hydrogen runs out B) All the helium runs out C) The outer layers of the Sun are blown away by strong winds D) The Sun burns all the way to iron, which cannot burn any more E) The core of the Sun collapses under its immense g ...
... 21. What event is responsible for the ultimate death of the Sun? A) All the hydrogen runs out B) All the helium runs out C) The outer layers of the Sun are blown away by strong winds D) The Sun burns all the way to iron, which cannot burn any more E) The core of the Sun collapses under its immense g ...
SAMPLE THIRD MIDTERM
... 48. Now that you know the luminosity of this star, how do you use this information to find its distance? a) compare the luminosity with the color of the star b) ignore the luminosity and find the mass of the star c) compare the luminosity with the apparent brightness of the star ...
... 48. Now that you know the luminosity of this star, how do you use this information to find its distance? a) compare the luminosity with the color of the star b) ignore the luminosity and find the mass of the star c) compare the luminosity with the apparent brightness of the star ...
Stellar Explosions
... protons and electrons react with one another to become neutrons: p + e → n + neutrino ...
... protons and electrons react with one another to become neutrons: p + e → n + neutrino ...
answers
... distant objects ever found. All of the objects are galaxies of stars except for E, which is a single nearby star. Which object is more luminous? A) E B) F C) they are about the same B) The two objects look equally bright, but are very different. The star is much closer and much less luminous. The ga ...
... distant objects ever found. All of the objects are galaxies of stars except for E, which is a single nearby star. Which object is more luminous? A) E B) F C) they are about the same B) The two objects look equally bright, but are very different. The star is much closer and much less luminous. The ga ...
Electromagnetic Spectrum
... • Stars take the color of their peak wavelength. For example the Sun’s peak wavelength is in the yellow region of the visible spectrum, therefore the sun appears to be yellow. • Hotter objects peak on the blue side and cooler objects toward the red • Some objects in the sky are even hotter, and they ...
... • Stars take the color of their peak wavelength. For example the Sun’s peak wavelength is in the yellow region of the visible spectrum, therefore the sun appears to be yellow. • Hotter objects peak on the blue side and cooler objects toward the red • Some objects in the sky are even hotter, and they ...
Universe 19
... 3. What is meant by a “first-magnitude” or “second-magnitude” star? 4. Why are some stars red and others blue? 5. What are the stars made of? 6. As stars go, is our Sun especially large or small? 7. What are giant, main-sequence, and white dwarf stars? 8. How do we know the distances to remote stars ...
... 3. What is meant by a “first-magnitude” or “second-magnitude” star? 4. Why are some stars red and others blue? 5. What are the stars made of? 6. As stars go, is our Sun especially large or small? 7. What are giant, main-sequence, and white dwarf stars? 8. How do we know the distances to remote stars ...
Lyra
Lyra (/ˈlaɪərə/; Latin for lyre, from Greek λύρα) is a small constellation. It is one of 48 listed by the 2nd century astronomer Ptolemy, and is one of the 88 constellations recognized by the International Astronomical Union. Lyra was often represented on star maps as a vulture or an eagle carrying a lyre, and hence sometimes referred to as Aquila Cadens or Vultur Cadens. Beginning at the north, Lyra is bordered by Draco, Hercules, Vulpecula, and Cygnus. Lyra is visible from the northern hemisphere from spring through autumn, and nearly overhead, in temperate latitudes, during the summer months. From the southern hemisphere, it is visible low in the northern sky during the winter months.The lucida or brightest star—and one of the brightest stars in the sky—is the white main sequence star Vega, a corner of the Summer Triangle. Beta Lyrae is the prototype of a class of stars known as Beta Lyrae variables, binary stars so close to each other that they become egg-shaped and material flows from one to the other. Epsilon Lyrae, known informally as the Double Double, is a complex multiple star system. Lyra also hosts the Ring Nebula, the second-discovered and best-known planetary nebula.