Space Booklet 1 N - hrsbstaff.ednet.ns.ca
... amount of mass being concentrated in an incredibly small area. The gravitational pull of this region is so great that nothing can escape – not even light. Although black holes cannot be seen, we know they exist from the way they affect nearby dust, stars and galaxies. Many of them are surrounded by ...
... amount of mass being concentrated in an incredibly small area. The gravitational pull of this region is so great that nothing can escape – not even light. Although black holes cannot be seen, we know they exist from the way they affect nearby dust, stars and galaxies. Many of them are surrounded by ...
Powerpoint slides - Earth & Planetary Sciences
... • 1) Why so close? – Most likely explanation seems to be inwards migration due to presence of nebular gas disk (which then dissipated) – The reason they didn’t just fall into the star is because the disk is absent very close in, probably because it gets cleared away by the star’s magnetic field. An ...
... • 1) Why so close? – Most likely explanation seems to be inwards migration due to presence of nebular gas disk (which then dissipated) – The reason they didn’t just fall into the star is because the disk is absent very close in, probably because it gets cleared away by the star’s magnetic field. An ...
The Origin of the Solar System
... Sun: ~ size of a small plum. Mercury, Venus, Earth, Mars: ~ size of a grain of salt. Jupiter: ~ size of an apple seed. Saturn: ~ slightly smaller than ...
... Sun: ~ size of a small plum. Mercury, Venus, Earth, Mars: ~ size of a grain of salt. Jupiter: ~ size of an apple seed. Saturn: ~ slightly smaller than ...
The Comet Cometh
... and ammonia. On the other hand, if the cometary ices represent aggregated interstellar material, then many more complex substances, including formaldehyde and the other organic molecules that radio astronomers have found in galactic clouds and regions of presumed star formation, should be present. A ...
... and ammonia. On the other hand, if the cometary ices represent aggregated interstellar material, then many more complex substances, including formaldehyde and the other organic molecules that radio astronomers have found in galactic clouds and regions of presumed star formation, should be present. A ...
Mini-Assessment-SC.5.E.5.3
... and dust. Some orbit the sun many times others may crash into the sun. What are these objects called? a. Asteroids b. Stars c. Comets d. Planets ...
... and dust. Some orbit the sun many times others may crash into the sun. What are these objects called? a. Asteroids b. Stars c. Comets d. Planets ...
In the icy near-vacuum of interstellar space are seething
... of thousands of years for certain giant stars to hundreds of thousands of years for stars like the sun—that astronomers can never hope to observe any one star through the transformations it undergoes between conception and birth. Instead, Herbig and other astronomers find themselves forced to captur ...
... of thousands of years for certain giant stars to hundreds of thousands of years for stars like the sun—that astronomers can never hope to observe any one star through the transformations it undergoes between conception and birth. Instead, Herbig and other astronomers find themselves forced to captur ...
September 2013 - astronomy for beginners
... conveniently out of the way so conditions were perfect for a meteor watch. It was not necessary to have a clear view to the north to see the meteors but the view of Perseus from a dark site was quite spectacular. The Milky Way (our galaxy) could be seen rising up from the northern horizon passing th ...
... conveniently out of the way so conditions were perfect for a meteor watch. It was not necessary to have a clear view to the north to see the meteors but the view of Perseus from a dark site was quite spectacular. The Milky Way (our galaxy) could be seen rising up from the northern horizon passing th ...
Asteroids
... named for Jan H. Oort, who proposed its existence in 1950. It has been hypothesized that the Oort Cloud is responsible for the periodic mass extinctions on Earth. Short-period Comets (comets with an orbital period under 200 years): The Kuiper belt is a region beyond Neptune in which at least 70,000 ...
... named for Jan H. Oort, who proposed its existence in 1950. It has been hypothesized that the Oort Cloud is responsible for the periodic mass extinctions on Earth. Short-period Comets (comets with an orbital period under 200 years): The Kuiper belt is a region beyond Neptune in which at least 70,000 ...
ASTR 330: The Solar System Dr Conor Nixon Fall 2006
... Edgeworth-Kuiper Belt • The Edgeworth-Kuiper belt is a band of icy planetesimals outside the orbit of Neptune (40-120 AU), hypothesized in the 1940s. • These objects are relics from the early formation phase of the solar system, which did not manage to form into ...
... Edgeworth-Kuiper Belt • The Edgeworth-Kuiper belt is a band of icy planetesimals outside the orbit of Neptune (40-120 AU), hypothesized in the 1940s. • These objects are relics from the early formation phase of the solar system, which did not manage to form into ...
holiday lights - Denver Astronomical Society
... Way rises to replace the galactic-center view of late summer that was arrayed around Sagittarius. Now we are looking through the thin outer part of our galaxy’s disk into the great beyond. There we find constellations like Cassiopeia, Perseus, Auriga and Cancer the Crab. Gemini and Orion lie on eith ...
... Way rises to replace the galactic-center view of late summer that was arrayed around Sagittarius. Now we are looking through the thin outer part of our galaxy’s disk into the great beyond. There we find constellations like Cassiopeia, Perseus, Auriga and Cancer the Crab. Gemini and Orion lie on eith ...
spectral lines as distant measurement tools
... Stars to the right have red appearance, to the left they are blue. The stellar brightness is measured as “photographic magnitude”, an inverted logarithmic scale for the amount of light received from different stars if they were all placed at the same distance. The diagram is not filled randomly, but ...
... Stars to the right have red appearance, to the left they are blue. The stellar brightness is measured as “photographic magnitude”, an inverted logarithmic scale for the amount of light received from different stars if they were all placed at the same distance. The diagram is not filled randomly, but ...
Four Great Satellite Observatories Hubble Space Telescope
... By far the smallest planet. Not a gas giant like other outer planets. Has an icy composition like a comet. Has a very elliptical, inclined orbit. Pluto has more in common with comets than with the eight major planets ...
... By far the smallest planet. Not a gas giant like other outer planets. Has an icy composition like a comet. Has a very elliptical, inclined orbit. Pluto has more in common with comets than with the eight major planets ...
Imaging extrasolar planets
... down into their atmospheres and infer their chemical compoThese theoretical models become increasingly uncertain at sition, temperatures, pressures, and cloud properties by very young ages because the exact initial conditions of how studying their brightness at different wavelengths. This spring the ...
... down into their atmospheres and infer their chemical compoThese theoretical models become increasingly uncertain at sition, temperatures, pressures, and cloud properties by very young ages because the exact initial conditions of how studying their brightness at different wavelengths. This spring the ...
Reassessing the formation of the inner Oort cloud
... either a Hernquist or Plummer potential – and chose other parameters based on the latest observations of embedded clusters from the literature. These other parameters result in the stars being on radial orbits and the cluster collapses. Similar to previous studies, in our simulations the inner Oort ...
... either a Hernquist or Plummer potential – and chose other parameters based on the latest observations of embedded clusters from the literature. These other parameters result in the stars being on radial orbits and the cluster collapses. Similar to previous studies, in our simulations the inner Oort ...
Probabilities of Collisions of Migrating Bodies and Dust Particles
... The larger value of P for Earth we have calculated compared to those argued by Morbidelli et al. [2000] (P (1-3)10-6) and Levison et al. [2001] (P = 410-7 ) is caused by the fact that in our runs we considered a larger number of Jupiter-crossing objects and the main portion of the probability of ...
... The larger value of P for Earth we have calculated compared to those argued by Morbidelli et al. [2000] (P (1-3)10-6) and Levison et al. [2001] (P = 410-7 ) is caused by the fact that in our runs we considered a larger number of Jupiter-crossing objects and the main portion of the probability of ...
Slide 1
... • Comets have large erratic orbits which when they get close to the sun the ice is melted and this forms the tail. • When the comet is completely melted, the remnant becomes an asteroid. • Asteroids are made up of metals and rocky material • Comets are made up of ice, dust and rocky material. • Both ...
... • Comets have large erratic orbits which when they get close to the sun the ice is melted and this forms the tail. • When the comet is completely melted, the remnant becomes an asteroid. • Asteroids are made up of metals and rocky material • Comets are made up of ice, dust and rocky material. • Both ...
Here - ScienceA2Z.com
... diameter; then collided to form larger bodies (planetesimals) of roughly 5 km in size; then gradually increased by further collisions at roughly 15 cm per year over the course of the next few million years. The inner Solar System was too warm for volatile molecules like water and methane to condense ...
... diameter; then collided to form larger bodies (planetesimals) of roughly 5 km in size; then gradually increased by further collisions at roughly 15 cm per year over the course of the next few million years. The inner Solar System was too warm for volatile molecules like water and methane to condense ...
10 - The Catholic University of America
... for Mars, Venus, and Mercury, than that for the Earth. This larger mass fraction would result in relatively large ancient oceans on Mars and Venus. For dust particles produced by comets and asteroids, PE was found to have a maximum (~0.001-0.02) at diameters of particles d~100 micron. These maximum ...
... for Mars, Venus, and Mercury, than that for the Earth. This larger mass fraction would result in relatively large ancient oceans on Mars and Venus. For dust particles produced by comets and asteroids, PE was found to have a maximum (~0.001-0.02) at diameters of particles d~100 micron. These maximum ...
What is a Planet?
... with LP comets having P > 200 years and isotropically distributed inclinations. In defining µ, I chose for m the mass of the transient population of bodies currently within orbital range of collisions with each of the potential targets. This seems more realistic than invoking the mass of the entire ...
... with LP comets having P > 200 years and isotropically distributed inclinations. In defining µ, I chose for m the mass of the transient population of bodies currently within orbital range of collisions with each of the potential targets. This seems more realistic than invoking the mass of the entire ...
the probabilities of collisions
... The larger value of P for Earth we have calculated compared to those argued by Morbidelli et al. [2000] (P (1-3)10-6) and Levison et al. [2001] (P = 410-7 ) is caused by the fact that in our runs we considered a larger number of Jupiter-crossing objects and the main portion of the probability of ...
... The larger value of P for Earth we have calculated compared to those argued by Morbidelli et al. [2000] (P (1-3)10-6) and Levison et al. [2001] (P = 410-7 ) is caused by the fact that in our runs we considered a larger number of Jupiter-crossing objects and the main portion of the probability of ...
AST301.Ch6.15.SolarSystems - University of Texas Astronomy
... Slow-speed collisions: Merging, “coagulation”, and “accumulation” of planetesimals into planets (note that this is sometimes called “accretion” in your text). Either get terrestrial-like planets (if close to the star, where it’s too warm for “volatiles” to be solid or liquid) or Jovian-type planets ...
... Slow-speed collisions: Merging, “coagulation”, and “accumulation” of planetesimals into planets (note that this is sometimes called “accretion” in your text). Either get terrestrial-like planets (if close to the star, where it’s too warm for “volatiles” to be solid or liquid) or Jovian-type planets ...
The Solar System (Ch. 6 in text) The solar system consists of the Sun
... Slow-speed collisions: Merging, “coagulation”, and “accumulation” of planetesimals into planets (note that this is sometimes called “accretion” in your text). Either get terrestrial-like planets (if close to the star, where it’s too warm for “volatiles” to be solid or liquid) or Jovian-type planets ...
... Slow-speed collisions: Merging, “coagulation”, and “accumulation” of planetesimals into planets (note that this is sometimes called “accretion” in your text). Either get terrestrial-like planets (if close to the star, where it’s too warm for “volatiles” to be solid or liquid) or Jovian-type planets ...
Lecture13.v3 - Lick Observatory
... What is Pluto? IAU decision, cont’d • Defined new class of objects called "dwarf planets" • “Planets" and "dwarf planets" are two distinct classes ...
... What is Pluto? IAU decision, cont’d • Defined new class of objects called "dwarf planets" • “Planets" and "dwarf planets" are two distinct classes ...
File
... The situation changed drastically in 1978 with the surprise discovery (see figure) that Pluto has a satellite. The moon was named Charon, The presence of a satellite allows us to deduce the mass of the planet by applying Newton’s form of Kepler’s third law. Charon is 5 to 10 per cent of Pluto’s mass ...
... The situation changed drastically in 1978 with the surprise discovery (see figure) that Pluto has a satellite. The moon was named Charon, The presence of a satellite allows us to deduce the mass of the planet by applying Newton’s form of Kepler’s third law. Charon is 5 to 10 per cent of Pluto’s mass ...
Chapter-6 Lecture Spring Semester
... as viewed from above Earth’s North Pole) is the same as the direction in which the Sun rotates on its axis. ...
... as viewed from above Earth’s North Pole) is the same as the direction in which the Sun rotates on its axis. ...
Oort cloud
The Oort cloud (/ˈɔrt/ or /ˈʊərt/) or Öpik–Oort cloud, named after Dutch astronomer Jan Oort and Estonian astronomer Ernst Öpik, is a theoretical spherical cloud of predominantly icy planetesimals believed to surround the Sun at a distance of up to around 100,000 AU (2 ly). This places it at almost half of the distance to Proxima Centauri, the nearest star to the Sun, and in interstellar space. The Kuiper belt and the scattered disc, the other two reservoirs of trans-Neptunian objects, are less than one thousandth as far from the Sun as the Oort cloud. The outer limit of the Oort cloud defines the cosmographical boundary of the Solar System and the region of the Sun's gravitational dominance.The Oort cloud is thought to comprise two regions: a spherical outer Oort cloud and a disc-shaped inner Oort cloud, or Hills cloud. Objects in the Oort cloud are largely composed of ices, such as water, ammonia, and methane.Astronomers conjecture that the matter composing the Oort cloud formed closer to the Sun and was scattered far into space by the gravitational effects of the giant planets early in the Solar System's evolution. Although no confirmed direct observations of the Oort cloud have been made, it may be the source of all long-period and Halley-type comets entering the inner Solar System, and many of the centaurs and Jupiter-family comets as well. The outer Oort cloud is only loosely bound to the Solar System, and thus is easily affected by the gravitational pull both of passing stars and of the Milky Way itself. These forces occasionally dislodge comets from their orbits within the cloud and send them towards the inner Solar System. Based on their orbits, most of the short-period comets may come from the scattered disc, but some may still have originated from the Oort cloud.