Space, time & Cosmos Lecture 4: Our Galaxy
... collapse of a vast cloud of gas and dust. Material in the center of the cloud was squeezed so tightly that it became hot enough to ignite nuclear fusion. The Sun is about halfway through its evolution, during which nuclear fusion reactions in its core fuse hydrogen into helium. Each second, more tha ...
... collapse of a vast cloud of gas and dust. Material in the center of the cloud was squeezed so tightly that it became hot enough to ignite nuclear fusion. The Sun is about halfway through its evolution, during which nuclear fusion reactions in its core fuse hydrogen into helium. Each second, more tha ...
Physics 20 Concept 22 Orbits and Satellites
... As the speed of the horizontal projectile is increased, it will land further and further away from the starting point. For a flat Earth the projectile would always hit the ground; no matter how fast the projectile went, gravity would pull it down to the ground. However, since the Earth is round, the ...
... As the speed of the horizontal projectile is increased, it will land further and further away from the starting point. For a flat Earth the projectile would always hit the ground; no matter how fast the projectile went, gravity would pull it down to the ground. However, since the Earth is round, the ...
2 nd Semester Final Review
... explosion starting the formation of the universe and will continue to expand forever. 75. The ________________________ is all the types of electromagnetic spectrum radio electromagnet waves, ________ waves are the long waves and ____________waves are the shortest waves in the spectrum. gamma ...
... explosion starting the formation of the universe and will continue to expand forever. 75. The ________________________ is all the types of electromagnetic spectrum radio electromagnet waves, ________ waves are the long waves and ____________waves are the shortest waves in the spectrum. gamma ...
ASTR 1120H – Spring Semester 2010 Exam 1 – Answers The AU is
... what would be the hypothetical planet's orbital period (in days)? ...
... what would be the hypothetical planet's orbital period (in days)? ...
Star Life Guided Notes
... Small stars last longer (don’t consume fuel as quickly) ____________on HR diagrams. “Burn” ________ for most of their lifetime. ...
... Small stars last longer (don’t consume fuel as quickly) ____________on HR diagrams. “Burn” ________ for most of their lifetime. ...
Part II: Ideas in Conflict.
... indicated the correctness of Copernicus’ model, faithful Christians had to ask some fundamental questions about their interpretation of scripture. By the end of the 17th century, most Christians had come to accept the heliocentric model. These Christians had to make adjustments to their interpre ...
... indicated the correctness of Copernicus’ model, faithful Christians had to ask some fundamental questions about their interpretation of scripture. By the end of the 17th century, most Christians had come to accept the heliocentric model. These Christians had to make adjustments to their interpre ...
Astronomy 1140 Quiz 3 Review
... • Why is Mercury’s orbit around the Sun similar to that of the Moon’s around the Earth? 1. Both feel strong tidal forces from their parent body that causes tidal locking. • Which has a hotter surface, Mercury or Venus? Why? 1. Although Mercury is closer, Venus is much hotter because of its runaway G ...
... • Why is Mercury’s orbit around the Sun similar to that of the Moon’s around the Earth? 1. Both feel strong tidal forces from their parent body that causes tidal locking. • Which has a hotter surface, Mercury or Venus? Why? 1. Although Mercury is closer, Venus is much hotter because of its runaway G ...
Rotation - Cloudfront.net
... Rotation – the turning, or spinning, of a body on its axis Revolution – the motion of a body, such as a planet or moon, along a path around some point in space Precession – the slight movement, over a period of 26,000 years, of Earth’s axis ...
... Rotation – the turning, or spinning, of a body on its axis Revolution – the motion of a body, such as a planet or moon, along a path around some point in space Precession – the slight movement, over a period of 26,000 years, of Earth’s axis ...
Solar System: ground-based
... - Pre-biotic gas-phase molecules in disks with ALMA - Ices in disks with VLT/JWST/OWL - Silicates, organic refractory material with VLT/JWST/OWL Silicates in disk: mid-IR ...
... - Pre-biotic gas-phase molecules in disks with ALMA - Ices in disks with VLT/JWST/OWL - Silicates, organic refractory material with VLT/JWST/OWL Silicates in disk: mid-IR ...
Origin of the Solar System
... The second element of modern cosmogony is observations of star-forming regions and protostars. Some examples of the most important objects of such observations are: • The structure and chemistry of molecular clouds; • Embedded Infra-Red (IR) Sources; • Pre-Main Sequence stars (T Tauri stars) with an ...
... The second element of modern cosmogony is observations of star-forming regions and protostars. Some examples of the most important objects of such observations are: • The structure and chemistry of molecular clouds; • Embedded Infra-Red (IR) Sources; • Pre-Main Sequence stars (T Tauri stars) with an ...
Powerpoint slides - Earth, Planetary, and Space Sciences
... • A few percent KBO’s are binaries, mostly not tightly bound (separation >102 radii) – Pluto/Charon an exception. Why are binaries useful? • How did these binaries form? • Collisions not a good explanation – low probability, and orbits end up tightly bound (e.g. Earth/Moon) • A more likely explanati ...
... • A few percent KBO’s are binaries, mostly not tightly bound (separation >102 radii) – Pluto/Charon an exception. Why are binaries useful? • How did these binaries form? • Collisions not a good explanation – low probability, and orbits end up tightly bound (e.g. Earth/Moon) • A more likely explanati ...
Duncan Wright
... radial was velocity the star around Mission it. For the lowSIM mass MaDwarf concept for a space telescope that would indirectly detect exoplanets through the stars the flux from the star is much lower than for higher mass stars and hence the habitable astrometric perturbation of their host stars. Th ...
... radial was velocity the star around Mission it. For the lowSIM mass MaDwarf concept for a space telescope that would indirectly detect exoplanets through the stars the flux from the star is much lower than for higher mass stars and hence the habitable astrometric perturbation of their host stars. Th ...
Weighing a Galaxy—11 Nov Ast 207 F2005 Nov-09 • Schedule
... 2. The amount of helium in the sun depends on the properties of deuterium. If deuterium is less tightly bound, would there be more or less helium on the surface of the sun? ...
... 2. The amount of helium in the sun depends on the properties of deuterium. If deuterium is less tightly bound, would there be more or less helium on the surface of the sun? ...
PPT - University of Delaware
... massive star(s) in our Milky Way Galaxy 10 M_sun Bipolar Nebula enshrouds star(s) from 1840’s “Giant Eruption” Very close so lots of data Data predicts system is actually a binary system with one star ~90 M_sun and the other ~30 M_sun Think it is in last stages of life before big star undergoes a su ...
... massive star(s) in our Milky Way Galaxy 10 M_sun Bipolar Nebula enshrouds star(s) from 1840’s “Giant Eruption” Very close so lots of data Data predicts system is actually a binary system with one star ~90 M_sun and the other ~30 M_sun Think it is in last stages of life before big star undergoes a su ...
astronomy 31 - UNC Physics
... D. Because Earth rotates, the stars appear to move around the north celestial pole in the northern hemisphere and the south celestial pole in the southern hemisphere. When standing at the north pole, the north celestial pole is directly overhead and when standing at the south pole the south celestia ...
... D. Because Earth rotates, the stars appear to move around the north celestial pole in the northern hemisphere and the south celestial pole in the southern hemisphere. When standing at the north pole, the north celestial pole is directly overhead and when standing at the south pole the south celestia ...
Mar 2017 - What`s Out Tonight?
... tens of thousands stars held together by their mutual gravity. All Galilean moons and cloud bands, easily visible at 50x. It is posof the globulars that can be seen in the sky are part of our Milky sible to see the moons with well-focused binoculars. Saturn is Way Galaxy, and there are about 200 of ...
... tens of thousands stars held together by their mutual gravity. All Galilean moons and cloud bands, easily visible at 50x. It is posof the globulars that can be seen in the sky are part of our Milky sible to see the moons with well-focused binoculars. Saturn is Way Galaxy, and there are about 200 of ...
Theoretical Modeling of Massive Stars Mr. Russell University of Delaware
... massive star(s) in our Milky Way Galaxy 10 M_sun Bipolar Nebula enshrouds star(s) from 1840’s “Giant Eruption” Very close so lots of data Data predicts system is actually a binary system with one star ~90 M_sun and the other ~30 M_sun Think it is in last stages of life before big star undergoes a su ...
... massive star(s) in our Milky Way Galaxy 10 M_sun Bipolar Nebula enshrouds star(s) from 1840’s “Giant Eruption” Very close so lots of data Data predicts system is actually a binary system with one star ~90 M_sun and the other ~30 M_sun Think it is in last stages of life before big star undergoes a su ...
Linking Asteroids and Meteorites through Reflectance Spectroscopy
... • More efficient than fusion, which turns less than 1% of the mass of the material into energy ...
... • More efficient than fusion, which turns less than 1% of the mass of the material into energy ...
Transits of planets: mean densities
... therefore the orbital period and the radius ratio between planet and star. Because the radii of stars are quite well known, the planet radius can be derived and with the planet mass from the radial velocity method also the mean density. Planet transits have been detected for more than 1000 stars. Su ...
... therefore the orbital period and the radius ratio between planet and star. Because the radii of stars are quite well known, the planet radius can be derived and with the planet mass from the radial velocity method also the mean density. Planet transits have been detected for more than 1000 stars. Su ...
MS-ESS1-1 Earth`s Place in the Universe
... Disciplinary Core Ideas ESS1.A: The Universe and Its Stars Patterns of the apparent motion of the sun, the moon, and stars in the sky can be observed, described, predicted, and explained with models. ESS1.B: Earth and the Solar System This model of the solar system can explain eclipses of the su ...
... Disciplinary Core Ideas ESS1.A: The Universe and Its Stars Patterns of the apparent motion of the sun, the moon, and stars in the sky can be observed, described, predicted, and explained with models. ESS1.B: Earth and the Solar System This model of the solar system can explain eclipses of the su ...
3 Satellites of Other Planets
... have recently discovered many smaller moons using spacecraft and observatories such as the Hubble Space Telescope. Scientists now know that Uranus has at least 24 small moons. Neptune has at least 13 moons. Triton, which is a large icy moon, is unusual. It revolves around Neptune in a backward, or r ...
... have recently discovered many smaller moons using spacecraft and observatories such as the Hubble Space Telescope. Scientists now know that Uranus has at least 24 small moons. Neptune has at least 13 moons. Triton, which is a large icy moon, is unusual. It revolves around Neptune in a backward, or r ...
Origin of the Earth and of the Solar System
... Vesta (573 km × 557 km × 446 km) is the second largest asteroid in the asteroid belt between Mars and Jupiter (Pallas is slightly larger but less dense (and massive). Vesta is differentiated and holds an iron core. The south pole regions features a giant crater – Rheasilvia – with 505 km diameter (! ...
... Vesta (573 km × 557 km × 446 km) is the second largest asteroid in the asteroid belt between Mars and Jupiter (Pallas is slightly larger but less dense (and massive). Vesta is differentiated and holds an iron core. The south pole regions features a giant crater – Rheasilvia – with 505 km diameter (! ...
Unit 3, Prelab Unit 3
... answer 1.28. Round off — do not just drop extra numbers. Obj. 6-8. Questions will be based on the following table: Planet ...
... answer 1.28. Round off — do not just drop extra numbers. Obj. 6-8. Questions will be based on the following table: Planet ...
Formation and evolution of the Solar System
The formation of the Solar System began 4.6 billion years ago with the gravitational collapse of a small part of a giant molecular cloud. Most of the collapsing mass collected in the center, forming the Sun, while the rest flattened into a protoplanetary disk out of which the planets, moons, asteroids, and other small Solar System bodies formed.This widely accepted model, known as the nebular hypothesis, was first developed in the 18th century by Emanuel Swedenborg, Immanuel Kant, and Pierre-Simon Laplace. Its subsequent development has interwoven a variety of scientific disciplines including astronomy, physics, geology, and planetary science. Since the dawn of the space age in the 1950s and the discovery of extrasolar planets in the 1990s, the model has been both challenged and refined to account for new observations.The Solar System has evolved considerably since its initial formation. Many moons have formed from circling discs of gas and dust around their parent planets, while other moons are thought to have formed independently and later been captured by their planets. Still others, such as the Moon, may be the result of giant collisions. Collisions between bodies have occurred continually up to the present day and have been central to the evolution of the Solar System. The positions of the planets often shifted due to gravitational interactions. This planetary migration is now thought to have been responsible for much of the Solar System's early evolution.In roughly 5 billion years, the Sun will cool and expand outward many times its current diameter (becoming a red giant), before casting off its outer layers as a planetary nebula and leaving behind a stellar remnant known as a white dwarf. In the far distant future, the gravity of passing stars will gradually reduce the Sun's retinue of planets. Some planets will be destroyed, others ejected into interstellar space. Ultimately, over the course of tens of billions of years, it is likely that the Sun will be left with none of the original bodies in orbit around it.