Branches of Astronomy
... Meteor - A streak of light in the sky from rock or dust burning up as it falls through the earth’s atmosphere. Meteorite - An chunk of rock from space after it hits a planet or moon, especially on the earth. Meteoroid - An chunk of rock from space that is smaller than an asteroid. New moon - The pha ...
... Meteor - A streak of light in the sky from rock or dust burning up as it falls through the earth’s atmosphere. Meteorite - An chunk of rock from space after it hits a planet or moon, especially on the earth. Meteoroid - An chunk of rock from space that is smaller than an asteroid. New moon - The pha ...
FL_HMH_G10 Selection Test FSA Style No Answer Key
... Revising and Editing Directions Read the passage and answer the questions that follow. (1) Have you ever wished that you had longer school breaks during holidays? (2) There is a way that you can. (3) That way is year-round schools. (4) It would not only provide longer holiday breaks, but it also wo ...
... Revising and Editing Directions Read the passage and answer the questions that follow. (1) Have you ever wished that you had longer school breaks during holidays? (2) There is a way that you can. (3) That way is year-round schools. (4) It would not only provide longer holiday breaks, but it also wo ...
Inti didn`t form in the X wind (and neither did most CAIs)
... "upstream" and limited (Cuzzi & Hogan 2003; Cuzzi et al. 2003). In a decretion disk, outward radial diffusion goes "with the flow": the majority of material can be transported outward. Enables outward transport of crystalline silicates and even CAI-like materials produced in inner solar system, out ...
... "upstream" and limited (Cuzzi & Hogan 2003; Cuzzi et al. 2003). In a decretion disk, outward radial diffusion goes "with the flow": the majority of material can be transported outward. Enables outward transport of crystalline silicates and even CAI-like materials produced in inner solar system, out ...
... blooming of Uranus and Neptune. Now you would think that if huge planets were going to form, they would do so early, when we think the inner planets, Jupiter, and Saturn formed. Computer calculations, in fact, predict formation times of about 100 million years--but not for Uranus and Neptune. The pr ...
Document
... • Mass of Sun • Radius of Earth • Hot as Sun’s core • A million times denser than lead • Slowly cool off ...
... • Mass of Sun • Radius of Earth • Hot as Sun’s core • A million times denser than lead • Slowly cool off ...
1 Timeline 2 Geocentric model
... • Center of deferent is at center of Earth (sort of) Ptolemy’s Geocentric Model • Ptolemy invented the device called the eccentric • The eccentric is the center of the deferent • Sometimes the eccentric was slightly off center from the center of the Earth Ptolemy’s Geocentric Model • Uniform circula ...
... • Center of deferent is at center of Earth (sort of) Ptolemy’s Geocentric Model • Ptolemy invented the device called the eccentric • The eccentric is the center of the deferent • Sometimes the eccentric was slightly off center from the center of the Earth Ptolemy’s Geocentric Model • Uniform circula ...
Name
... B) The rate that gamma rays are hitting the Earth’s atmosphere C) The rate that hydrogen is being fused into helium in the Sun D) The rate that white dwarfs are being formed in the galaxy E) The rate that stars form in the galaxy 10) A K5 star and a B2 star both have an apparent magnitude of +0.5 in ...
... B) The rate that gamma rays are hitting the Earth’s atmosphere C) The rate that hydrogen is being fused into helium in the Sun D) The rate that white dwarfs are being formed in the galaxy E) The rate that stars form in the galaxy 10) A K5 star and a B2 star both have an apparent magnitude of +0.5 in ...
Star Formation 1 - Center for Astrostatistics
... So, the cloud of atoms starts gravitational collapse, gas heats up as density increase, and collapse stops when hydrostatic equilibriumis achieved; that is, when the inward pull of gravity and outward push of gas pressure are equal everywhere. The result is a sphere, hot & dense in the core, cooler ...
... So, the cloud of atoms starts gravitational collapse, gas heats up as density increase, and collapse stops when hydrostatic equilibriumis achieved; that is, when the inward pull of gravity and outward push of gas pressure are equal everywhere. The result is a sphere, hot & dense in the core, cooler ...
Chapter 13: The Death of Stars
... high-energy particles At this time, no star capable of producing a supernova is less than 50 ly away. The most massive star known (~ 100 solar masses) is ~ 25,000 ly from ...
... high-energy particles At this time, no star capable of producing a supernova is less than 50 ly away. The most massive star known (~ 100 solar masses) is ~ 25,000 ly from ...
the outer planets, their satellites and the plutoids
... 2. A planet must also have enough mass to become nearly spherical. 3. And a planet must be able to sweep other small astronomical objects out of its orbital path. 4. The object must have a maximum magnitude larger than 1+. Such objects will be called Plutoids or trans-Neptunian Objects. Satellite ...
... 2. A planet must also have enough mass to become nearly spherical. 3. And a planet must be able to sweep other small astronomical objects out of its orbital path. 4. The object must have a maximum magnitude larger than 1+. Such objects will be called Plutoids or trans-Neptunian Objects. Satellite ...
The Universe
... lowers the pressure causing the star to collapse upon itself under its own gravity. As the outer layers contract, they heat up. This triggers the fusion of the remaining hydrogen. The increased energy output in the outer layers causes them to expand. The star increases massively in size, becoming a ...
... lowers the pressure causing the star to collapse upon itself under its own gravity. As the outer layers contract, they heat up. This triggers the fusion of the remaining hydrogen. The increased energy output in the outer layers causes them to expand. The star increases massively in size, becoming a ...
Slide 1
... The Lives of Stars Gestation, Birth, and Youth: 1. The womb: Stars are born in dense molecular clouds. --The interstellar medium must be dense enough so H atoms can collide and form H2 molecules. This also is facilitated on dust--for other molecules as well. It increases gravitation enough for stars ...
... The Lives of Stars Gestation, Birth, and Youth: 1. The womb: Stars are born in dense molecular clouds. --The interstellar medium must be dense enough so H atoms can collide and form H2 molecules. This also is facilitated on dust--for other molecules as well. It increases gravitation enough for stars ...
Tidal Heating of Moons
... These cracks highly resemble ice flows on Earth. Astronomers have studied Europa and know that the surface is salty water ice. Since Jupiter is 5x as far from the Sun as the Earth is, it should be very, very, very cold ---- so water should be a solid. However, if Europa were a solid ice ball, it sho ...
... These cracks highly resemble ice flows on Earth. Astronomers have studied Europa and know that the surface is salty water ice. Since Jupiter is 5x as far from the Sun as the Earth is, it should be very, very, very cold ---- so water should be a solid. However, if Europa were a solid ice ball, it sho ...
2011 - Edexcel
... (d) In the space below, sketch and label the relative positions of the Sun, Earth and Moon during a lunar eclipse. ...
... (d) In the space below, sketch and label the relative positions of the Sun, Earth and Moon during a lunar eclipse. ...
Topic 4: Earth-Moon
... As the Moon orbits the Earth, its orbit is tilted slightly (about 5 degrees) from earth’s orbital plane (ecliptic) The moon crosses earth’s plane twice during its orbit. If this crossing happens at the new moon phase, the Moon will be lined up with the Sun and pass in front of it. This alignment has ...
... As the Moon orbits the Earth, its orbit is tilted slightly (about 5 degrees) from earth’s orbital plane (ecliptic) The moon crosses earth’s plane twice during its orbit. If this crossing happens at the new moon phase, the Moon will be lined up with the Sun and pass in front of it. This alignment has ...
What`s Up - April 2016
... is 15000 times as luminous as the sun, a rare yellow-white supergiant 313 light years away. If placed at the center of our solar system, its surface would be three quarters of the distance from the centre to the orbit of Mercury, Earth would be global toast, and so would we. Rising in the southeast ...
... is 15000 times as luminous as the sun, a rare yellow-white supergiant 313 light years away. If placed at the center of our solar system, its surface would be three quarters of the distance from the centre to the orbit of Mercury, Earth would be global toast, and so would we. Rising in the southeast ...
General - Friends of APOD
... and hot that they slowly disintegrating right before our telescopes. Glowing gas globs each typically over 30 times more massive than the Earth are being expelled by violent stellar winds. Wolf–Rayet star WR 124, visible near the above image center spanning six light years across, is thus creating t ...
... and hot that they slowly disintegrating right before our telescopes. Glowing gas globs each typically over 30 times more massive than the Earth are being expelled by violent stellar winds. Wolf–Rayet star WR 124, visible near the above image center spanning six light years across, is thus creating t ...
Jupiter, Saturn, Uranus, and Neptune
... Jupiter’s Interior • Jupiter, with a core temperature of about 30,000 K, emits more energy than it receives – Possibly due to heat left over from its creation – Planet may still be shrinking in size converting gravitational energy into heat The energy that stirs the circulation in Jupiter's atmosph ...
... Jupiter’s Interior • Jupiter, with a core temperature of about 30,000 K, emits more energy than it receives – Possibly due to heat left over from its creation – Planet may still be shrinking in size converting gravitational energy into heat The energy that stirs the circulation in Jupiter's atmosph ...
Asteroids and Meteorites
... 3: corresponds to the distance of Ceres, discovered in 1801 by Piazzi. 6: corresponds to Uranus 7: a=40 AU, Neptune is at 30 AU ...
... 3: corresponds to the distance of Ceres, discovered in 1801 by Piazzi. 6: corresponds to Uranus 7: a=40 AU, Neptune is at 30 AU ...
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.