Light: The Cosmic Messenger
... • How do telescopes help us learn about the universe? —We can see fainter objects and more detail than we can see by eye. Specialized telescopes allow us to learn more than we could from visible light alone. ...
... • How do telescopes help us learn about the universe? —We can see fainter objects and more detail than we can see by eye. Specialized telescopes allow us to learn more than we could from visible light alone. ...
Created with Sketch. Satellite web hunt
... are usually placed in a geostationary orbit. They orbit above the Earth’s equator and have a period and direction that matches the rotation of the Earth. This allows the satellite to stay above the same point on the Earth’s surface. Earth observation satellites have low Earth orbits to obtain detail ...
... are usually placed in a geostationary orbit. They orbit above the Earth’s equator and have a period and direction that matches the rotation of the Earth. This allows the satellite to stay above the same point on the Earth’s surface. Earth observation satellites have low Earth orbits to obtain detail ...
Chapter 3 The Interstellar Medium
... The photoionisation and recombination process in H II regions and planetary nebulae produces, by a convenient accident, one Balmer photon for each Lyman continuum photon from the hot star, so the ultraviolet flux from the star can be measured by observing an optical spectrum of the H II region surro ...
... The photoionisation and recombination process in H II regions and planetary nebulae produces, by a convenient accident, one Balmer photon for each Lyman continuum photon from the hot star, so the ultraviolet flux from the star can be measured by observing an optical spectrum of the H II region surro ...
The Ceres Connection - MIT Lincoln Laboratory
... through the centuries to discover and classify minor planets. These asteroids, which orbit the Sun generally between Mars and Jupiter, were first noticed by astronomers observing the night sky through a telescope. The search for minor planets continues today, with astronomers using computerassisted ...
... through the centuries to discover and classify minor planets. These asteroids, which orbit the Sun generally between Mars and Jupiter, were first noticed by astronomers observing the night sky through a telescope. The search for minor planets continues today, with astronomers using computerassisted ...
Chapter 3 Cosmology 3.1 The Doppler effect
... discovered very distant supernovae much further away than expected. To reach such distances, the supernovae must have been accelerating. The astronomers concluded that the expansion of the Universe is accelerating and has been for about the past 5000 million years. Before this discovery, most astron ...
... discovered very distant supernovae much further away than expected. To reach such distances, the supernovae must have been accelerating. The astronomers concluded that the expansion of the Universe is accelerating and has been for about the past 5000 million years. Before this discovery, most astron ...
20 pm - Starmap
... Using binoculars, preferably with a tripod, will considerably enhance your star gazing experience. Many deep sky objects like galaxies and clusters will be within reach. Jupiter satellites and Saturn’s rings will also be visible. A spectacular experience for beginners in astronomy... ...
... Using binoculars, preferably with a tripod, will considerably enhance your star gazing experience. Many deep sky objects like galaxies and clusters will be within reach. Jupiter satellites and Saturn’s rings will also be visible. A spectacular experience for beginners in astronomy... ...
Light & Telescopes
... Very sharp radio images are produced with arrays of radio telescopes linked together in a technique called interferometry. Earth’s atmosphere is fairly transparent to most visible light and radio waves, along with some infrared and ultraviolet radiation arriving from space, but it absorbs much o ...
... Very sharp radio images are produced with arrays of radio telescopes linked together in a technique called interferometry. Earth’s atmosphere is fairly transparent to most visible light and radio waves, along with some infrared and ultraviolet radiation arriving from space, but it absorbs much o ...
Disk-planet interaction
... arguments about impossibility of other worlds, despite a growing controversy within Church. ...
... arguments about impossibility of other worlds, despite a growing controversy within Church. ...
Eris en Dysnomia
... by timing the orbit of Eris' moon Dysnomia. Images taken with a ground-based Keck telescope, when combined with existing images taken by Hubble Space Telescope, show that Dysnomia has a nearly circular orbit lasting about 16 days. Cataloged as 2003 UB313 only a year ago, infrared images also showed ...
... by timing the orbit of Eris' moon Dysnomia. Images taken with a ground-based Keck telescope, when combined with existing images taken by Hubble Space Telescope, show that Dysnomia has a nearly circular orbit lasting about 16 days. Cataloged as 2003 UB313 only a year ago, infrared images also showed ...
July-August 2015 - Nottingham Astronomical Society
... long but by no means seems overly lengthy. The book has a very clear narrative – a fluent, non-technical style, making it feel as though the author is reading aloud to you. As expected, the book covers the basics: the phases of the moon; eclipses; gravity and tides; occultations; some history of ear ...
... long but by no means seems overly lengthy. The book has a very clear narrative – a fluent, non-technical style, making it feel as though the author is reading aloud to you. As expected, the book covers the basics: the phases of the moon; eclipses; gravity and tides; occultations; some history of ear ...
M101: The Pinwheel Galaxy
... One Inquiry activity can help students become independent thinkers. Students may conduct research to expand their understanding by describing how a galaxy’s structure affects its formation and appearance. Grade Level Middle – high school, grades 6–12. Prerequisites The number of stars visible throug ...
... One Inquiry activity can help students become independent thinkers. Students may conduct research to expand their understanding by describing how a galaxy’s structure affects its formation and appearance. Grade Level Middle – high school, grades 6–12. Prerequisites The number of stars visible throug ...
Dawn Exceeds Wildest Expectations as First Ever Spacecraft to Orbit
... · The brightest asteroid, 4 Vesta, has brightened to magnitude 6.0 as it approaches opposition in Capricornus. It's easily visible in binoculars in late evening; use our online finder chart or look in the August 2011 issue of Sky & Telescope, page 53. The Dawn spacecraft has taken up orbit around Ve ...
... · The brightest asteroid, 4 Vesta, has brightened to magnitude 6.0 as it approaches opposition in Capricornus. It's easily visible in binoculars in late evening; use our online finder chart or look in the August 2011 issue of Sky & Telescope, page 53. The Dawn spacecraft has taken up orbit around Ve ...
The Mystery of Gamma Ray Bursts
... Ramaty High Energy Solar Spectroscopic Imager satellite, though primarily looking at gamma rays in solar flares, also observed GRBs and has shown polarized light due to magnetic fields associated with GRBs (RHESSIweb). In the last five years, NASAs Swift satellite, with its ability to quickly turn t ...
... Ramaty High Energy Solar Spectroscopic Imager satellite, though primarily looking at gamma rays in solar flares, also observed GRBs and has shown polarized light due to magnetic fields associated with GRBs (RHESSIweb). In the last five years, NASAs Swift satellite, with its ability to quickly turn t ...
Slug: Meteor Shower On me
... cloud in the distant Solar System - well past Pluto, most never venturing into the inner Solar System. When disturbed - perhaps by the gravity of a nearby star - a comet may fall toward the Sun. As a comet approaches the Sun, rocks, icechunks, gas, and dust boil away, sometimes creating impressive l ...
... cloud in the distant Solar System - well past Pluto, most never venturing into the inner Solar System. When disturbed - perhaps by the gravity of a nearby star - a comet may fall toward the Sun. As a comet approaches the Sun, rocks, icechunks, gas, and dust boil away, sometimes creating impressive l ...
Getting to Know: Structure of the Universe
... How is a solar system different from a galaxy? A solar system is a star and the objects that orbit that star. Scientists have found several solar systems in our galaxy, many of which have planets surrounding them. If the Milky Way galaxy were the size of a quarter, the Sun would be the size of a sin ...
... How is a solar system different from a galaxy? A solar system is a star and the objects that orbit that star. Scientists have found several solar systems in our galaxy, many of which have planets surrounding them. If the Milky Way galaxy were the size of a quarter, the Sun would be the size of a sin ...
at th e planetarium
... As in previous years, the summer is once again shaping up to be a busy time for amateu r astronomers in the Edmonto n area . There i s certainly no lack of things t o do, places to go, conventions to attend, and projects to work on. For example, in this issu e you'll find details on 3 astronomical e ...
... As in previous years, the summer is once again shaping up to be a busy time for amateu r astronomers in the Edmonto n area . There i s certainly no lack of things t o do, places to go, conventions to attend, and projects to work on. For example, in this issu e you'll find details on 3 astronomical e ...
Comet Observers Club Chair
... antiquity. There are Chinese records of Comet Halley going back to at least 240 BC. The famous Bayeux Tapestry, which commemorates the Norman Conquest of England in 1066, depicts an apparition of Comet Halley. As of 1995, 878 comets have been cataloged and their orbits at least roughly calculated. O ...
... antiquity. There are Chinese records of Comet Halley going back to at least 240 BC. The famous Bayeux Tapestry, which commemorates the Norman Conquest of England in 1066, depicts an apparition of Comet Halley. As of 1995, 878 comets have been cataloged and their orbits at least roughly calculated. O ...
The INTERSTELLAR MEDIUM
... • Light traveling through these clouds will be absorbed and reddened (more blue light absorbed or scattered), so star light looks different than it did when emitted. • Black in center, redder at edges of dense clouds • Astronomers use spectral lines to “de-redden” a star’s light and can figure out i ...
... • Light traveling through these clouds will be absorbed and reddened (more blue light absorbed or scattered), so star light looks different than it did when emitted. • Black in center, redder at edges of dense clouds • Astronomers use spectral lines to “de-redden” a star’s light and can figure out i ...
Observing with the DIMMWIT at MRO
... Enter type of CCD (HX) into ‘instrument’ and target star into ‘object’. Enter 3000 for the number of frames. Make sure ‘insert date/time in filename when saving’ is selected. Close the Data Parameters box. Select a subregion by pressing (6). Once this button has been pressed, you can use the ...
... Enter type of CCD (HX) into ‘instrument’ and target star into ‘object’. Enter 3000 for the number of frames. Make sure ‘insert date/time in filename when saving’ is selected. Close the Data Parameters box. Select a subregion by pressing (6). Once this button has been pressed, you can use the ...
Helium Fusion What Will Happen When There Is No More Helium in
... • Low mass: < 2 times the Sun • Intermediate mass: 2-8 times the Sun • High mass: > 8 times the Sun ...
... • Low mass: < 2 times the Sun • Intermediate mass: 2-8 times the Sun • High mass: > 8 times the Sun ...
Adaptive Optics: An Introduction
... Turbulence in the Earth's atmosphere is caused by many physical phenomena. The atmospheric boundary layer is the part of the atmosphere closest to the ground, whose state and wind speeds are influenced directly by the presence of the Earth's surface. The boundary layer is almost continuously turbule ...
... Turbulence in the Earth's atmosphere is caused by many physical phenomena. The atmospheric boundary layer is the part of the atmosphere closest to the ground, whose state and wind speeds are influenced directly by the presence of the Earth's surface. The boundary layer is almost continuously turbule ...
Prospects for detection of protoplanets
... with ALMA will allow detection of the warm dust in the vicinity of the planet only if the object is at a distance of not more than about 100 pc. For larger distances, the contrast between the planetary region and the adjacent disk in all of the considered planet/star/disk configurations will be too ...
... with ALMA will allow detection of the warm dust in the vicinity of the planet only if the object is at a distance of not more than about 100 pc. For larger distances, the contrast between the planetary region and the adjacent disk in all of the considered planet/star/disk configurations will be too ...
114EQ-AR
... Perform the first part of this procedure during the daytime and the last step at night. 1. Point the telescope at an easy-to-find land object such as the top of a telephone pole or a distant mountain or tower. Look through the eyepiece and turn the focuser knob (31) until the image is sharply focuse ...
... Perform the first part of this procedure during the daytime and the last step at night. 1. Point the telescope at an easy-to-find land object such as the top of a telephone pole or a distant mountain or tower. Look through the eyepiece and turn the focuser knob (31) until the image is sharply focuse ...
Spitzer Space Telescope
The Spitzer Space Telescope (SST), formerly the Space Infrared Telescope Facility (SIRTF), is an infrared space observatory launched in 2003. It is the fourth and final of the NASA Great Observatories program.The planned mission period was to be 2.5 years with a pre-launch expectation that the mission could extend to five or slightly more years until the onboard liquid helium supply was exhausted. This occurred on 15 May 2009. Without liquid helium to cool the telescope to the very low temperatures needed to operate, most of the instruments are no longer usable. However, the two shortest-wavelength modules of the IRAC camera are still operable with the same sensitivity as before the cryogen was exhausted, and will continue to be used in the Spitzer Warm Mission. All Spitzer data, from both the primary and warm phases, are archived at the Infrared Science Archive (IRSA).In keeping with NASA tradition, the telescope was renamed after its successful demonstration of operation, on 18 December 2003. Unlike most telescopes that are named after famous deceased astronomers by a board of scientists, the new name for SIRTF was obtained from a contest open to the general public.The contest led to the telescope being named in honor of astronomer Lyman Spitzer, who had promoted the concept of space telescopes in the 1940s. Spitzer wrote a 1946 report for RAND Corporation describing the advantages of an extraterrestrial observatory and how it could be realized with available or upcoming technology. He has been cited for his pioneering contributions to rocketry and astronomy, as well as ""his vision and leadership in articulating the advantages and benefits to be realized from the Space Telescope Program.""The US$800 million Spitzer was launched from Cape Canaveral Air Force Station, on a Delta II 7920H ELV rocket, Monday, 25 August 2003 at 13:35:39 UTC-5 (EDT).It follows a heliocentric instead of geocentric orbit, trailing and drifting away from Earth's orbit at approximately 0.1 astronomical unit per year (a so-called ""earth-trailing"" orbit). The primary mirror is 85 centimeters (33 in) in diameter, f/12, made of beryllium and is cooled to 5.5 K (−449.77 °F). The satellite contains three instruments that allow it to perform astronomical imaging and photometry from 3 to 180 micrometers, spectroscopy from 5 to 40 micrometers, and spectrophotometry from 5 to 100 micrometers.