Issue #15 - 2016 April - National Space Society
... Rrefine the design of the compressor stage of a turbine engine to improve its aerodynamic efficiency that could save 2.5 % in fuel burn. Pratt & Whitneygeared turbofan jet engine mature advanced fan design to improve propulsion efficiency and reduce noise and could reduce fuel burn by 15 % and signi ...
... Rrefine the design of the compressor stage of a turbine engine to improve its aerodynamic efficiency that could save 2.5 % in fuel burn. Pratt & Whitneygeared turbofan jet engine mature advanced fan design to improve propulsion efficiency and reduce noise and could reduce fuel burn by 15 % and signi ...
File
... – Large-impact hypothesis: A large planetesimal collided with Earth. Material was ejected into a disk around Earth and eventually formed the Moon. • This is the currently accepted theory. ...
... – Large-impact hypothesis: A large planetesimal collided with Earth. Material was ejected into a disk around Earth and eventually formed the Moon. • This is the currently accepted theory. ...
Brochure - Institut für Raumfahrtsysteme
... the interstellar region have been detected in the Solar System. In 1993, the dust detector aboard the Ulysses spacecraft registered impacts from a direction that was opposite to the expected direction of interplanetary dust grains. Their impact velocities exceeded the Sun‘s escape velocity, even if ...
... the interstellar region have been detected in the Solar System. In 1993, the dust detector aboard the Ulysses spacecraft registered impacts from a direction that was opposite to the expected direction of interplanetary dust grains. Their impact velocities exceeded the Sun‘s escape velocity, even if ...
Origin of Elements in the Solar System
... were generally representative of those in the galaxy, and perhaps beyond when the protosolar nebula formed. Thus, “universal” and “cosmic” are frequently substituted for “solar” as the adjective describing these abundances. If the sun and other stars developed from homogeneous material which had bee ...
... were generally representative of those in the galaxy, and perhaps beyond when the protosolar nebula formed. Thus, “universal” and “cosmic” are frequently substituted for “solar” as the adjective describing these abundances. If the sun and other stars developed from homogeneous material which had bee ...
Planet X, Comets and Earth Changes
... the inside” and still remain active to talk about it on the “outside”. In the mid-1990s Mr. McCanney’s work was recognized by a group of high-level Russian scientists who had measured but did not understand electro-dynamic effects around Earth and in the solar system. They translated all of his pape ...
... the inside” and still remain active to talk about it on the “outside”. In the mid-1990s Mr. McCanney’s work was recognized by a group of high-level Russian scientists who had measured but did not understand electro-dynamic effects around Earth and in the solar system. They translated all of his pape ...
Asteroids in the inner Solar system II. Observable
... parameter G is set to 0.15 corresponding to low-albedo C-type asteroids. C-type are the most common variety of asteroids constituting more than 75 per cent of the Main Belt. They are extremely dark with an albedo of typically 0.03. They are chemically similar to carbonaceous chondritic meteorites (s ...
... parameter G is set to 0.15 corresponding to low-albedo C-type asteroids. C-type are the most common variety of asteroids constituting more than 75 per cent of the Main Belt. They are extremely dark with an albedo of typically 0.03. They are chemically similar to carbonaceous chondritic meteorites (s ...
dynamical history of the asteroid belt and implications for terrestrial
... termined by dynamical processes in the early solar system, because large asteroids do not uniformly fill regions of the main belt that are stable over the age of the solar system (Minton and Malhotra, 2009, see also Chapter 3). The present study is therefore additionally motivated by the need to und ...
... termined by dynamical processes in the early solar system, because large asteroids do not uniformly fill regions of the main belt that are stable over the age of the solar system (Minton and Malhotra, 2009, see also Chapter 3). The present study is therefore additionally motivated by the need to und ...
Earth`s Place in the Universe
... pages.) duct tape (Wrapping the spiral wires keeps them from being snagged and pulled. The duct tape also keeps the front and back covers attached to the notebooks. Once students loose a cover more and more pages seem to come loose. Using duct tape can be fun. Camouflage, college logos, neon color ...
... pages.) duct tape (Wrapping the spiral wires keeps them from being snagged and pulled. The duct tape also keeps the front and back covers attached to the notebooks. Once students loose a cover more and more pages seem to come loose. Using duct tape can be fun. Camouflage, college logos, neon color ...
PYTS/ASTR 206 – Comets
... Used Newton’s laws to figure out the orbit of many comets Comets seen in 1531, 1607, and 1682 were the same object Predicted a return in 1759 ...
... Used Newton’s laws to figure out the orbit of many comets Comets seen in 1531, 1607, and 1682 were the same object Predicted a return in 1759 ...
Comet Ion Tails Purpose Introduction Materials
... APOD: 2009 February 25 - Two Tails of Comet Lulin Explanation: Go outside tonight and see Comet Lulin. From a dark location, you should need only a good star map and admirable perseverance -although wide-field binoculars might help. Yesterday, Comet Lulin passed its closest to Earth, so that the com ...
... APOD: 2009 February 25 - Two Tails of Comet Lulin Explanation: Go outside tonight and see Comet Lulin. From a dark location, you should need only a good star map and admirable perseverance -although wide-field binoculars might help. Yesterday, Comet Lulin passed its closest to Earth, so that the com ...
as a PDF file
... appearances (they are so small that they show no detectable disks when viewed through a telescope), they soon were called asteroids (from Greek aster, star). No more new minor planets in the zone between Mars and Jupiter were found until 1845, but after that fainter asteroids were found with increas ...
... appearances (they are so small that they show no detectable disks when viewed through a telescope), they soon were called asteroids (from Greek aster, star). No more new minor planets in the zone between Mars and Jupiter were found until 1845, but after that fainter asteroids were found with increas ...
DYNAMICAL EVOLUTION OF THE OORT CLOUD Paul R
... It was found that 23% of the stars failed to survive for ten orbits, the estimated number of observed cycles of extinction in the fossil record. Most of those lost diffused to aphelia beyond the sun's sphere of influence, a likely result considering the large initial aphelion. Continuing the integra ...
... It was found that 23% of the stars failed to survive for ten orbits, the estimated number of observed cycles of extinction in the fossil record. Most of those lost diffused to aphelia beyond the sun's sphere of influence, a likely result considering the large initial aphelion. Continuing the integra ...
CHAPTER 1 Meteorites, Asteroids, and Comets
... the asteroids have been fragmented? – Perhaps the best scientific arguments test the interpretation of evidence. – If you understand the evidence, you hold the key to the science. ...
... the asteroids have been fragmented? – Perhaps the best scientific arguments test the interpretation of evidence. – If you understand the evidence, you hold the key to the science. ...
Updated IAA RAS Planetary Ephemerides
... masses of asteroids may be obtained by analyzing their perturbations to other celestial bodies caused by them. This technique may be applied when examining spacecraft near asteroids, binary asteroids or asteroids with satellites, perturbations on the Mars and the Earth caused by asteroids and reveal ...
... masses of asteroids may be obtained by analyzing their perturbations to other celestial bodies caused by them. This technique may be applied when examining spacecraft near asteroids, binary asteroids or asteroids with satellites, perturbations on the Mars and the Earth caused by asteroids and reveal ...
Jupiter - Friend or Foe
... The idea that Jupiter has protected the Earth from excessive bombardment dates back to when the main impact risk to the Earth was thought to arise from the Oort cloud comets. The idea probably dates back to the 1960s, when craters were first widely accepted as evidence of ongoing impacts upon the E ...
... The idea that Jupiter has protected the Earth from excessive bombardment dates back to when the main impact risk to the Earth was thought to arise from the Oort cloud comets. The idea probably dates back to the 1960s, when craters were first widely accepted as evidence of ongoing impacts upon the E ...
The Plasma Environment of Mars (PDF Available)
... amplitude are plotted in top panels 1, 2 and 3. The last panel shows the electron fluxes for five energy ranges labeled with their geometrical mean energy. Each bow shock (BS) and MPB crossing is indicated between two vertical lines showing the apparent thickness of the boundary. The magnetosheath w ...
... amplitude are plotted in top panels 1, 2 and 3. The last panel shows the electron fluxes for five energy ranges labeled with their geometrical mean energy. Each bow shock (BS) and MPB crossing is indicated between two vertical lines showing the apparent thickness of the boundary. The magnetosheath w ...
Jupiter – friend or foe? III: the Oort cloud comets
... The idea that Jupiter has protected the Earth from excessive bombardment dates back to when the main impact risk to the Earth was thought to arise from the Oort cloud comets. The idea probably dates back to the 1960s, when craters were first widely accepted as evidence of ongoing impacts upon the Ea ...
... The idea that Jupiter has protected the Earth from excessive bombardment dates back to when the main impact risk to the Earth was thought to arise from the Oort cloud comets. The idea probably dates back to the 1960s, when craters were first widely accepted as evidence of ongoing impacts upon the Ea ...
New Horizons Mission Design - SwRI Boulder
... Because of insufficient funding, in early 2002 NASA directed that the PKB mission could not be ready for launch in 2004. The baseline mission was then revised to launch in January 2006, the last launch opportunity for the JGA trajectory, pushing the earliest Pluto arrival to late 2015. Since the sp ...
... Because of insufficient funding, in early 2002 NASA directed that the PKB mission could not be ready for launch in 2004. The baseline mission was then revised to launch in January 2006, the last launch opportunity for the JGA trajectory, pushing the earliest Pluto arrival to late 2015. Since the sp ...
Searching satellites of asteroid Itokawa by imaging observation with Hayabusa spacecraft
... on 07 September and was numbered as NOAA Region 808 (S09, L=232, class/area, Fkc/1430 on 09 September).” Assuming the time difference between our observation and the flare event resulted from the rotation of the Sun, it is probable that high-energy particles struck the spacecraft during imaging beca ...
... on 07 September and was numbered as NOAA Region 808 (S09, L=232, class/area, Fkc/1430 on 09 September).” Assuming the time difference between our observation and the flare event resulted from the rotation of the Sun, it is probable that high-energy particles struck the spacecraft during imaging beca ...
Asteroid Rotation Periods
... Firstly, the asteroid’s path can be determined across the sky by measuring with precision the position of the asteroid at different dates. This will allow the determination of the asteroid’s orbit around the Sun, and therefore its path on the sky in subsequent days, months or years. Another very use ...
... Firstly, the asteroid’s path can be determined across the sky by measuring with precision the position of the asteroid at different dates. This will allow the determination of the asteroid’s orbit around the Sun, and therefore its path on the sky in subsequent days, months or years. Another very use ...
a PDF file - National Optical Astronomy Observatory
... Cover Photo: Comet Hyakutake is seen rising over the hills near Faraway Ranch in Southern Arizona’s Chiricahua National Monument. The photo was taken about 8:30 pm on the night of 24/25 March, 1996, the comet’s night of closest approach to earth. The bright stars near the top of the image are in the ...
... Cover Photo: Comet Hyakutake is seen rising over the hills near Faraway Ranch in Southern Arizona’s Chiricahua National Monument. The photo was taken about 8:30 pm on the night of 24/25 March, 1996, the comet’s night of closest approach to earth. The bright stars near the top of the image are in the ...
ESA ACHIEVEMENTS
... highly successful in this domain, as our scientific missions have proved time and again, and it now has a new momentum created in part by the Vision for ...
... highly successful in this domain, as our scientific missions have proved time and again, and it now has a new momentum created in part by the Vision for ...
Meteorites
... meteorite type (besides maybe Marian and Lunar one). • Their chemical compositions match the chemistry of the Sun more than any other class of Chondrites. • Often rich in carbon, but their main trait is a higher amount of magnesium, calcium, and aluminium relative to silicon. • Some of them contain ...
... meteorite type (besides maybe Marian and Lunar one). • Their chemical compositions match the chemistry of the Sun more than any other class of Chondrites. • Often rich in carbon, but their main trait is a higher amount of magnesium, calcium, and aluminium relative to silicon. • Some of them contain ...
Etymology - Link Observatory
... Both the coma and tail are illuminated by the Sun and may become visible when a comet passes through the inner Solar System, the dust reflecting sunlight directly and the gases glowing from ionisation. Most comets are too faint to be visible without the aid of a telescope, but a few each decade beco ...
... Both the coma and tail are illuminated by the Sun and may become visible when a comet passes through the inner Solar System, the dust reflecting sunlight directly and the gases glowing from ionisation. Most comets are too faint to be visible without the aid of a telescope, but a few each decade beco ...