Practice Assessment Answers
... The gravitational force between them would be doubled. b. the distance between the two bodies were doubled? The gravitational force between them would be one-fourth as great. 4. What information do you need to find the period of a planet using Kepler’s third law? You need to know the period of anoth ...
... The gravitational force between them would be doubled. b. the distance between the two bodies were doubled? The gravitational force between them would be one-fourth as great. 4. What information do you need to find the period of a planet using Kepler’s third law? You need to know the period of anoth ...
The universe and our planet
... At present, the majority of experts agree that there is no single place that can be considered the centre of the universe. ...
... At present, the majority of experts agree that there is no single place that can be considered the centre of the universe. ...
Comets People were very superstitious in ancient times. They
... the Sun in less than 200 years come from the Kuiper Belt. The Kuiper Belt is just beyond the planet Neptune. Comets that take longer than 200 years to go around the Sun come from the Oort Cloud. The Oort Cloud is far out at the edge of the solar system, beyond the planet Pluto. Astronomers think tha ...
... the Sun in less than 200 years come from the Kuiper Belt. The Kuiper Belt is just beyond the planet Neptune. Comets that take longer than 200 years to go around the Sun come from the Oort Cloud. The Oort Cloud is far out at the edge of the solar system, beyond the planet Pluto. Astronomers think tha ...
Slide 1
... information is written at all levels of understanding. I recommend to read them all, a lot. Our universe is a very complicated and very huge place. We are a very, very, very small part in the grand scope of things. You need to have a very solid understanding of the major principles of our universe t ...
... information is written at all levels of understanding. I recommend to read them all, a lot. Our universe is a very complicated and very huge place. We are a very, very, very small part in the grand scope of things. You need to have a very solid understanding of the major principles of our universe t ...
Unit 1 - UW Madison Astronomy Department
... What causes the core of a s tar to contract during the main sequence phase of the star’s life? a. Helium has a larger atomic weight than hydrogen and exerts a stronger gravitational pull on the core. b. Convection in the outer layers carries energy out of the core more efficiently as the star ages c ...
... What causes the core of a s tar to contract during the main sequence phase of the star’s life? a. Helium has a larger atomic weight than hydrogen and exerts a stronger gravitational pull on the core. b. Convection in the outer layers carries energy out of the core more efficiently as the star ages c ...
ASTR 105 Intro Astronomy: The Solar System
... There is no south celestial pole so there will be no circumpolar stars. ...
... There is no south celestial pole so there will be no circumpolar stars. ...
What would the sky look like from the North Pole
... It depends on the season There is no south celestial pole so there will be no circumpolar stars. ...
... It depends on the season There is no south celestial pole so there will be no circumpolar stars. ...
Stars and Galaxies
... The stars in a galaxy are very far apart. Scientists believe there may be as many as 100 000 million other galaxies beyond ours. Because gravity attracts them together, the stars in a galaxy are clustered. There are vast expanses of nothing between different galaxies. ...
... The stars in a galaxy are very far apart. Scientists believe there may be as many as 100 000 million other galaxies beyond ours. Because gravity attracts them together, the stars in a galaxy are clustered. There are vast expanses of nothing between different galaxies. ...
Telling Time by the Sun - Cornell Astronomy
... 1. The Earth rotates on its axis once every ~24 hours (day). 2. The Earth revolves around the Sun once every ~365 days (year). 3. The Moon revolves around the Earth once every ~28 days (month). 4. The orbital planes of objects in the Solar System lie (almost) in the equatorial planes of the major bo ...
... 1. The Earth rotates on its axis once every ~24 hours (day). 2. The Earth revolves around the Sun once every ~365 days (year). 3. The Moon revolves around the Earth once every ~28 days (month). 4. The orbital planes of objects in the Solar System lie (almost) in the equatorial planes of the major bo ...
IOSR Journal of Applied Physics (IOSR-JAP)
... A very similar thing happens with every planet. Actually here the board which I used to tie the yarn is another star! Not that star that’s around the planets are moving. I mean every planet has another star which’s gravity is causing of the planet’s rotation along with their axis in a particular ang ...
... A very similar thing happens with every planet. Actually here the board which I used to tie the yarn is another star! Not that star that’s around the planets are moving. I mean every planet has another star which’s gravity is causing of the planet’s rotation along with their axis in a particular ang ...
–1– AST104 Sp2006: EXAM 1 Multiple Choice Questions: Mark the
... b. larger than the orbit speed when the e. 16 AU planet is closest to the star but smaller when 26. Which is correct about the relation between the planet is farthest from the star Einstein’s and Newton’s theories? c. smaller than the orbit speed everywhere a. Special relativity explains deviations ...
... b. larger than the orbit speed when the e. 16 AU planet is closest to the star but smaller when 26. Which is correct about the relation between the planet is farthest from the star Einstein’s and Newton’s theories? c. smaller than the orbit speed everywhere a. Special relativity explains deviations ...
Jupiter (Jove) was the King of the Gods
... o Jupiter has rings like Saturn's, but much fainter and smaller. o Unexpected and were only discovered when two of the Voyager 1 scientists insisted that after traveling 1 billion km it was at least worth a quick look to see if any rings might be present. o Unlike Saturn's, Jupiter's rings are dark. ...
... o Jupiter has rings like Saturn's, but much fainter and smaller. o Unexpected and were only discovered when two of the Voyager 1 scientists insisted that after traveling 1 billion km it was at least worth a quick look to see if any rings might be present. o Unlike Saturn's, Jupiter's rings are dark. ...
White Dwarfs - Indiana University
... hydrogen atmospheres, so there are no DBs – At 30,000 K, the formation of an He ionization zone creates turbulence which mixes the H with He, and leads to He stars (stars with more than 10-13 H have too much H to form a sufficient convection zone, and they remain DAs) – Change in DA/non-DA ratio at ...
... hydrogen atmospheres, so there are no DBs – At 30,000 K, the formation of an He ionization zone creates turbulence which mixes the H with He, and leads to He stars (stars with more than 10-13 H have too much H to form a sufficient convection zone, and they remain DAs) – Change in DA/non-DA ratio at ...
physics140-f07-lecture21 - Open.Michigan
... 2) Planetary orbits sweep out equal areas in equal times. This law reflects the fact that gravity is a central force. Since gravity acts along the radial direction connecting two bodies, it produces no torque on either. For a planet of mass m, the angular momentum of the orbit is conserved and deter ...
... 2) Planetary orbits sweep out equal areas in equal times. This law reflects the fact that gravity is a central force. Since gravity acts along the radial direction connecting two bodies, it produces no torque on either. For a planet of mass m, the angular momentum of the orbit is conserved and deter ...
Student Text, pp. 278-284
... Although Copernicus was at the forefront of the scientific revolution, his explanation of the orbits of the planets did not account for slight irregularities observed over long periods. The orbits were not exactly circles. More analysis was needed to find the true shapes of the orbits. The next infl ...
... Although Copernicus was at the forefront of the scientific revolution, his explanation of the orbits of the planets did not account for slight irregularities observed over long periods. The orbits were not exactly circles. More analysis was needed to find the true shapes of the orbits. The next infl ...
Moons
... meaning of its name is panic. This moon is one of the smallest moons in the solar system; it is only 12.6 km (7.8 miles). Most people think that Deimos and Phobos are asteroids’ because their irregular shape and small size. Having small size causes lack of gravity. Because of having lack gravity, th ...
... meaning of its name is panic. This moon is one of the smallest moons in the solar system; it is only 12.6 km (7.8 miles). Most people think that Deimos and Phobos are asteroids’ because their irregular shape and small size. Having small size causes lack of gravity. Because of having lack gravity, th ...
Cosmology
... Describe and explain asteroids and meteorites and that these usually vaporize on entering the Earth’s atmosphere. Binary stars- most stars are part of a binary system and rotate around their common centre of mass. The Big Bang Discuss cosmic background radiation and its discovery. Talk about the sig ...
... Describe and explain asteroids and meteorites and that these usually vaporize on entering the Earth’s atmosphere. Binary stars- most stars are part of a binary system and rotate around their common centre of mass. The Big Bang Discuss cosmic background radiation and its discovery. Talk about the sig ...
Jupiter
... • Known since prehistoric times • Galileo was the first to observe it with a telescope in 1610 • In 1659, Christian Huygens correctly inferred the geometry of the rings • Saturn is the least dense of the planets; its density (0.7 g/cc) is less than that of water. ...
... • Known since prehistoric times • Galileo was the first to observe it with a telescope in 1610 • In 1659, Christian Huygens correctly inferred the geometry of the rings • Saturn is the least dense of the planets; its density (0.7 g/cc) is less than that of water. ...
Educator Guide: Starlab (Grades 6-8)
... Supergiant Star – an enormous star which is thousands of times brighter than our Sun and has a much shorter lifespan. Supergiants can either be red (like Betelgeuse in the constellation Orion and Antares in Scorpius) or Blue (like Rigel in Orion or Deneb in Cygnus). Supernova – the explosive dea ...
... Supergiant Star – an enormous star which is thousands of times brighter than our Sun and has a much shorter lifespan. Supergiants can either be red (like Betelgeuse in the constellation Orion and Antares in Scorpius) or Blue (like Rigel in Orion or Deneb in Cygnus). Supernova – the explosive dea ...
Astronomical events in 2017 - Guernsey Astronomy Society
... On 16 September Mercury will be within half a degree of Mars, low in the east before sunrise. Venus is the “Evening Star” in the west from the beginning of the year, and reaches greatest eastern elongation on 12 January. It is at inferior conjunction on 25 March and reappears as the “Morning Star” i ...
... On 16 September Mercury will be within half a degree of Mars, low in the east before sunrise. Venus is the “Evening Star” in the west from the beginning of the year, and reaches greatest eastern elongation on 12 January. It is at inferior conjunction on 25 March and reappears as the “Morning Star” i ...
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.