The Search for Another Earth
... Are there planets similar to the Earth? For centuries, these questions baffled curious minds. Either a positive or negative answer, if found one day, would carry a deep philosophical significance for our very existence in the universe. Although the search for extra-terrestrial intelligence was initiate ...
... Are there planets similar to the Earth? For centuries, these questions baffled curious minds. Either a positive or negative answer, if found one day, would carry a deep philosophical significance for our very existence in the universe. Although the search for extra-terrestrial intelligence was initiate ...
Astronomy 1400: Homework 5
... sizes you find for under about a few hundred dollars. For a given size, are reflectors or refractors generally more expensive? Why do you suppose that is? Finally, for the range of typical sizes you find for under a few hundred dollars, would you be able to resolve the solar granulation cells? Ignor ...
... sizes you find for under about a few hundred dollars. For a given size, are reflectors or refractors generally more expensive? Why do you suppose that is? Finally, for the range of typical sizes you find for under a few hundred dollars, would you be able to resolve the solar granulation cells? Ignor ...
The Edge of the Solar System The Oort Cloud
... sun (Kuiper belt ends at 55 AU) Centauri is 270,000 AU from sun • Proxima • Contains between 0.1 and 2 trillion comets between Oort Cloud Comets: 50-500 million • Distance km (0.33-3.33 AU) • Surface temp. in Oort Cloud ~5-6 K (Kuiper belt 30-60 K) • Named after Jan Oort ...
... sun (Kuiper belt ends at 55 AU) Centauri is 270,000 AU from sun • Proxima • Contains between 0.1 and 2 trillion comets between Oort Cloud Comets: 50-500 million • Distance km (0.33-3.33 AU) • Surface temp. in Oort Cloud ~5-6 K (Kuiper belt 30-60 K) • Named after Jan Oort ...
The Oort Cloud
... sun (Kuiper belt ends at 55 AU) • Proxima Centauri is 270,000 AU from sun • Contains between 0.1 and 2 trillion comets • Distance between Oort Cloud Comets: 50-500 million km (0.33-3.33 AU) • Surface temp. in Oort Cloud ~5-6 K (Kuiper belt 30-60 K) • Named after Jan Oort ...
... sun (Kuiper belt ends at 55 AU) • Proxima Centauri is 270,000 AU from sun • Contains between 0.1 and 2 trillion comets • Distance between Oort Cloud Comets: 50-500 million km (0.33-3.33 AU) • Surface temp. in Oort Cloud ~5-6 K (Kuiper belt 30-60 K) • Named after Jan Oort ...
Studies of young stellar objects (25+5)
... The EVLA and jet kinematics • Proper motions now limited by sensitivity: impossible to detect in weak jets, very difficult to follow up ejecta that become too weak with time. • With the possibility of recombination line “stacking” we may be able to detect radial ...
... The EVLA and jet kinematics • Proper motions now limited by sensitivity: impossible to detect in weak jets, very difficult to follow up ejecta that become too weak with time. • With the possibility of recombination line “stacking” we may be able to detect radial ...
Sirius Astronomer - Orange County Astronomers
... occultation. The masses of both Pluto and Eris were already known, from timing their moons’ orbits. From the new diameter measurement, Eris is found to be a lot denser than Pluto, so the former is mostly rock inside and the latter is mostly ice inside. So they could not have formed similarly in simi ...
... occultation. The masses of both Pluto and Eris were already known, from timing their moons’ orbits. From the new diameter measurement, Eris is found to be a lot denser than Pluto, so the former is mostly rock inside and the latter is mostly ice inside. So they could not have formed similarly in simi ...
society journal - Auckland Astronomical Society
... ultimate nuclear nightmare, the explosion and fire over 20 years ago at Chernobyl Reactor number four. In the aftermath of Chernobyl experts predicted tens of thousands of deaths from cancer. Those predictions were based on a theory called the Linear No Threshold (LNT) model. ...
... ultimate nuclear nightmare, the explosion and fire over 20 years ago at Chernobyl Reactor number four. In the aftermath of Chernobyl experts predicted tens of thousands of deaths from cancer. Those predictions were based on a theory called the Linear No Threshold (LNT) model. ...
Vast Spaces Of The Universe
... worldly-minded politicians and money- The common snail,. Helix aspersa, lays merchants look mean and feeble. from forty to a hundred, inlittlenests at His text was " Seek ye first the King- the roots of grass. dom of God and His righteousness," and How does a Snipe Bleat? The bleating, or drumming, ...
... worldly-minded politicians and money- The common snail,. Helix aspersa, lays merchants look mean and feeble. from forty to a hundred, inlittlenests at His text was " Seek ye first the King- the roots of grass. dom of God and His righteousness," and How does a Snipe Bleat? The bleating, or drumming, ...
Poster 49 | PDF (852 kB)
... formation?” and “How important is dynamical evolution for cluster mass functions?”. In recent years, methane imaging has emerged as a powerful tool for identifying T dwarf candidates in very young clusters, where T dwarfs are at their brightest and have not yet been subject to possible dynamical eje ...
... formation?” and “How important is dynamical evolution for cluster mass functions?”. In recent years, methane imaging has emerged as a powerful tool for identifying T dwarf candidates in very young clusters, where T dwarfs are at their brightest and have not yet been subject to possible dynamical eje ...
Constellation Argo Navis
... systems have been found around stars in the constellation Puppis. As the Milky Way also runs through Puppis, there are a large number of open clusters in the constellation. M46 and M47 are two open clusters in the same binocular field. M47 can be seen with the naked eye under dark skies, and its bri ...
... systems have been found around stars in the constellation Puppis. As the Milky Way also runs through Puppis, there are a large number of open clusters in the constellation. M46 and M47 are two open clusters in the same binocular field. M47 can be seen with the naked eye under dark skies, and its bri ...
SRP_Space_Lesson 5 - Scientist in Residence Program
... is to say, the stars do not really form that shape. The first observers of the sky thought that the stars in a constellation when connected resembled a shape that was familiar to them, and so they named it. This allowed them to map the movement of the stars throughout the seasons, which helped the d ...
... is to say, the stars do not really form that shape. The first observers of the sky thought that the stars in a constellation when connected resembled a shape that was familiar to them, and so they named it. This allowed them to map the movement of the stars throughout the seasons, which helped the d ...
(Mike Riddle CTI)-84_eng_cr_v4.0
... “The stars of our own galaxy, the Milky Way, rotate about the galactic center with different speeds, the inner ones rotating faster than the outer ones. The observed rotation speeds are so fast that if our galaxy were more than a few hundred million years old, it would be a featureless disc of stars ...
... “The stars of our own galaxy, the Milky Way, rotate about the galactic center with different speeds, the inner ones rotating faster than the outer ones. The observed rotation speeds are so fast that if our galaxy were more than a few hundred million years old, it would be a featureless disc of stars ...
Circumpolar constellations
... Is there a direction you could look any clear night, no matter what time of year, and always see the same stars? Yes! Circumpolar constellations do not rise or set, but appear to move in a series of circles around Polaris, the pole star. In the northern hemisphere, between 30 and 40 degrees North la ...
... Is there a direction you could look any clear night, no matter what time of year, and always see the same stars? Yes! Circumpolar constellations do not rise or set, but appear to move in a series of circles around Polaris, the pole star. In the northern hemisphere, between 30 and 40 degrees North la ...
Our Galaxy, the Milky Way Galaxy
... The further away a star is, the greater the errors can be when calculating their temperature/color because of the ISM interference The further away a star is, the more reddening occurs o We cannot see past a few thousand light years in the PLANE of the Milky Way Galaxy because of ISM We don’t kn ...
... The further away a star is, the greater the errors can be when calculating their temperature/color because of the ISM interference The further away a star is, the more reddening occurs o We cannot see past a few thousand light years in the PLANE of the Milky Way Galaxy because of ISM We don’t kn ...
Summary: Nuclear burning in stars
... those farther from center. • Î automatic stretching of any feature into a trailing spiral. • But arms should rapidly wind up and disappear ...
... those farther from center. • Î automatic stretching of any feature into a trailing spiral. • But arms should rapidly wind up and disappear ...
Star and Planet Formation - Homepages of UvA/FNWI staff
... 2. If the Earth rotates around its axis (as required to explain day and night), things should fly off the spinning planet. 3. If the Earth rotates around the Sun, we should observe parallaxes for the fixed stars. While the first two can actually be attributed to an Figure 1.1: This is a montage view ...
... 2. If the Earth rotates around its axis (as required to explain day and night), things should fly off the spinning planet. 3. If the Earth rotates around the Sun, we should observe parallaxes for the fixed stars. While the first two can actually be attributed to an Figure 1.1: This is a montage view ...
Chapter 13 Neutron Stars and Black Holes
... • The system’s total mass is about 35 solar masses, so the X-ray source must be about 10 solar masses • Hot gas appears to be flowing from the visible star to an unseen companion • Short time-scale variations indicate that the source must be very small ...
... • The system’s total mass is about 35 solar masses, so the X-ray source must be about 10 solar masses • Hot gas appears to be flowing from the visible star to an unseen companion • Short time-scale variations indicate that the source must be very small ...
Searching for stars in high-velocity clouds
... does not rule out the scenario proposed by Braun & Burton (1999) and Blitz et al. (1999), but it does rule out HVCs being of the same class of object as the other known dwarf galaxies. If extragalactic then for some reason these H I clouds, unlike other dwarf galaxies, have not formed many (if any) ...
... does not rule out the scenario proposed by Braun & Burton (1999) and Blitz et al. (1999), but it does rule out HVCs being of the same class of object as the other known dwarf galaxies. If extragalactic then for some reason these H I clouds, unlike other dwarf galaxies, have not formed many (if any) ...
Take our Astronomy Test
... What is a safe way to observe the Sun? When is the best time to observe Mercury and Venus? When is the best time to observe superior planets? Name two prominent meteor showers and when they are visible. Name a prominent constellation visible for each season and explain the mythology of each. Name th ...
... What is a safe way to observe the Sun? When is the best time to observe Mercury and Venus? When is the best time to observe superior planets? Name two prominent meteor showers and when they are visible. Name a prominent constellation visible for each season and explain the mythology of each. Name th ...
R136a1
RMC 136a1 (usually abbreviated to R136a1) is a Wolf-Rayet star located at the center of R136, the central condensation of stars of the large NGC 2070 open cluster in the Tarantula Nebula. It lies at a distance of about 50 kiloparsecs (163,000 light-years) in the Large Magellanic Cloud. It has the highest mass and luminosity of any known star, at 265 M☉ and 8.7 million L☉, and also one of the hottest at over 50,000 K.