Biodiversity through Earth history
... • Extinction of dinosaurs, many other marine and terrestrial species (both animal and plant) • Iridium: normally deposited at a slow, known, rate from extraterrestrial sources. Iridium concentrations in the layer at the K-T boundary are so high that it could not have been deposited by normal deposit ...
... • Extinction of dinosaurs, many other marine and terrestrial species (both animal and plant) • Iridium: normally deposited at a slow, known, rate from extraterrestrial sources. Iridium concentrations in the layer at the K-T boundary are so high that it could not have been deposited by normal deposit ...
April 2014 - Bluewater Astronomical Society
... reports, etc., are welcome. I reserve the right to edit for brevity or clarity. Errors or omissions are enHrely mine although I strive for accuracy in star events, etc. I ...
... reports, etc., are welcome. I reserve the right to edit for brevity or clarity. Errors or omissions are enHrely mine although I strive for accuracy in star events, etc. I ...
January
... Except for the probes that have been sent to the planets, astronomers cannot reach out and touch their experiment, which is the universe itself. One of the key measurements in Astronomy is distance. To measure distances, the astronomer must rely on the light from any object. Distances are then deter ...
... Except for the probes that have been sent to the planets, astronomers cannot reach out and touch their experiment, which is the universe itself. One of the key measurements in Astronomy is distance. To measure distances, the astronomer must rely on the light from any object. Distances are then deter ...
Exoplanets Properties of the host stars Characterization of the
... – According to this hypothesis, the giant planet occurrencemetallicity correlation is a dynamical manifestation related to the radial migration of stars in the Galactic disk – Giant planet formation is hypothesized to correlate with Galactocentric distance, rather being primarily linked to metalli ...
... – According to this hypothesis, the giant planet occurrencemetallicity correlation is a dynamical manifestation related to the radial migration of stars in the Galactic disk – Giant planet formation is hypothesized to correlate with Galactocentric distance, rather being primarily linked to metalli ...
Meteroroids! Asteroids! Comets!
... • A piece of rock similar to the material formed into planets. • An Asteroid is smaller than a planet but larger than a meteoroid ...
... • A piece of rock similar to the material formed into planets. • An Asteroid is smaller than a planet but larger than a meteoroid ...
Digging Deeper - subfreshmanhomework2016-2017
... of stars a constellation. Each constellation has a Latin name. The name is given a three-letter abbreviation. For example, Cassiopeia is abbreviated as Cas. Draco is abbreviated as Dra. Constellations are important reference points for locating planets and other astronomical objects in the night sky ...
... of stars a constellation. Each constellation has a Latin name. The name is given a three-letter abbreviation. For example, Cassiopeia is abbreviated as Cas. Draco is abbreviated as Dra. Constellations are important reference points for locating planets and other astronomical objects in the night sky ...
Meteroroids! Asteroids! Comets!
... • A piece of rock similar to the material formed into planets. • An Asteroid is smaller than a planet but larger than a meteoroid ...
... • A piece of rock similar to the material formed into planets. • An Asteroid is smaller than a planet but larger than a meteoroid ...
Reasons for the Seasons Webquest
... TRUTH: Most people believe this statement to be true. The seasons are caused in reality by the 23.5o tilt of the Earth’s axis and the axis always pointing in the same direction. During the course of a year, this one phenomenon changes the duration of time in which the sun is visible in the sky, the ...
... TRUTH: Most people believe this statement to be true. The seasons are caused in reality by the 23.5o tilt of the Earth’s axis and the axis always pointing in the same direction. During the course of a year, this one phenomenon changes the duration of time in which the sun is visible in the sky, the ...
Gresham Lecture, Wednesday 15 December 2010 Unsolved
... apparent "asymmetry", or difference, between matter and antimatter to explain why there arose this tiny excess of matter over antimatter. Today, antimatter is created primarily by cosmic rays - extraterrestrial high-energy particles that form new particles as they penetrate the earth's atmosphere. I ...
... apparent "asymmetry", or difference, between matter and antimatter to explain why there arose this tiny excess of matter over antimatter. Today, antimatter is created primarily by cosmic rays - extraterrestrial high-energy particles that form new particles as they penetrate the earth's atmosphere. I ...
ASTRONOMY 113 Laboratory Kepler`s 3rd Law and the Mass of Sgr A
... The Copernican revolution, which we studied in the Celestial motions lab, solved the question of retrograde motions and once and for all put the sun at the center of the solar system, rather than the earth. But it left a number of questions unanswered: Why are the outer planets revolving around the ...
... The Copernican revolution, which we studied in the Celestial motions lab, solved the question of retrograde motions and once and for all put the sun at the center of the solar system, rather than the earth. But it left a number of questions unanswered: Why are the outer planets revolving around the ...
Planets, Moons, and Stars
... Celsius). This is hot enough to melt Earth! The Sun is about 150 million kilometers (93 million miles) away from Earth. If you could travel there by car on a highway, it would take more than 160 years. Even though the Sun is that far away, it provides Earth with light and heat. Life on Earth could n ...
... Celsius). This is hot enough to melt Earth! The Sun is about 150 million kilometers (93 million miles) away from Earth. If you could travel there by car on a highway, it would take more than 160 years. Even though the Sun is that far away, it provides Earth with light and heat. Life on Earth could n ...
PDF - Amazing Space, STScI
... Peering into the crowded bulge of our Milky Way galaxy, Hubble looked farther than ever before to nab a group of planet candidates outside our solar system. Astronomers used Hubble to conduct a census of Jupiter-sized extrasolar planets residing in the bulge of our Milky Way galaxy. Looking at a nar ...
... Peering into the crowded bulge of our Milky Way galaxy, Hubble looked farther than ever before to nab a group of planet candidates outside our solar system. Astronomers used Hubble to conduct a census of Jupiter-sized extrasolar planets residing in the bulge of our Milky Way galaxy. Looking at a nar ...
document
... of 0.0026 AU (112000 km) from the Earth. This object is estimated to be about 10 m across. If it had collided with the Earth, the impact energy would have been equivalent to about four Hiroshima bombs. The resulting crater would have been hundreds of metres across devastating to a major city. The cl ...
... of 0.0026 AU (112000 km) from the Earth. This object is estimated to be about 10 m across. If it had collided with the Earth, the impact energy would have been equivalent to about four Hiroshima bombs. The resulting crater would have been hundreds of metres across devastating to a major city. The cl ...
Hubble Space Telescope`s
... Peering into the crowded bulge of our Milky Way galaxy, Hubble looked farther than ever before to nab a group of planet candidates outside our solar system. Astronomers used Hubble to conduct a census of Jupiter-sized extrasolar planets residing in the bulge of our Milky Way galaxy. Looking at a nar ...
... Peering into the crowded bulge of our Milky Way galaxy, Hubble looked farther than ever before to nab a group of planet candidates outside our solar system. Astronomers used Hubble to conduct a census of Jupiter-sized extrasolar planets residing in the bulge of our Milky Way galaxy. Looking at a nar ...
Primordial Planet Formation - University of California San Diego
... Fig. 1. Oval at left top is an image of so‐called cirrus “dust” clouds of the Milky Way Galaxy (Veniziani et al. 2010, Fig. 2) at DIRBE microwave wavelength 240 µ compared to three other microwave images at the bottom showing the same features. The “dust” temperatures match the freezing to boil ...
... Fig. 1. Oval at left top is an image of so‐called cirrus “dust” clouds of the Milky Way Galaxy (Veniziani et al. 2010, Fig. 2) at DIRBE microwave wavelength 240 µ compared to three other microwave images at the bottom showing the same features. The “dust” temperatures match the freezing to boil ...
the particle was on Earth`s surface
... (except at two poles) must rotate in a circle about the Earth’s rotation axis and thus have a centripital acceleration ( requiring a centripital net force ) directed toward the center of the ciecle. ...
... (except at two poles) must rotate in a circle about the Earth’s rotation axis and thus have a centripital acceleration ( requiring a centripital net force ) directed toward the center of the ciecle. ...
IDENTIFYING THE ROTATION RATE AND THE PRESENCE OF
... With the recent discoveries of hundreds of extrasolar planets, the search for planets like Earth and life in the universe is quickly gaining momentum. In the future, large space observatories could directly detect the light scattered from rocky planets, but they would not be able to spatially resolv ...
... With the recent discoveries of hundreds of extrasolar planets, the search for planets like Earth and life in the universe is quickly gaining momentum. In the future, large space observatories could directly detect the light scattered from rocky planets, but they would not be able to spatially resolv ...
January 2016 - Newbury Astronomical Society
... The constellation of Orion in the south at midnight in mid January As well as being one of the most spectacular and A star like our Sun will fuse Hydrogen into Helium and beautiful constellations, Orion is also very interesting towards the end of its life will begin to fuse some of the because we ca ...
... The constellation of Orion in the south at midnight in mid January As well as being one of the most spectacular and A star like our Sun will fuse Hydrogen into Helium and beautiful constellations, Orion is also very interesting towards the end of its life will begin to fuse some of the because we ca ...
Bellringer - Madison County Schools
... which contains 2 suns. This would be what kind of star system? ...
... which contains 2 suns. This would be what kind of star system? ...
THE SUN IS NOT AN AVERAGE STAR Sometimes biblical creation
... "We believe that the earth and the other planets are a natural by-product of the formation of the sun, and we have evidence that some of the essential ingredients for life were present on the earth from the time it formed. Similar conditions must have been met countless times in the history of the u ...
... "We believe that the earth and the other planets are a natural by-product of the formation of the sun, and we have evidence that some of the essential ingredients for life were present on the earth from the time it formed. Similar conditions must have been met countless times in the history of the u ...
Chapter 2: The Copernican Revolution
... to dispense with the epicycles for Mercury, Venus, Mars, Jupiter and Saturn. How then does Copernicus explain the retrograde motions of these planets? From a Copernican perspective, the retrograde motions of the planets are an illusion, caused by the earth’s own motion. Suppose you’re driving ...
... to dispense with the epicycles for Mercury, Venus, Mars, Jupiter and Saturn. How then does Copernicus explain the retrograde motions of these planets? From a Copernican perspective, the retrograde motions of the planets are an illusion, caused by the earth’s own motion. Suppose you’re driving ...
Night/Day and Earth Years
... Mini Lab: What does Earth’s rotation cause? • In pairs of 2, one student is the Sun and will hold a flashlight and shine it at the stomach of the other student who is Earth… • The sun (flashlight holder) stands still, while the Earth ROTATES (spins) in a circle—mimicking the motion of the Earth on ...
... Mini Lab: What does Earth’s rotation cause? • In pairs of 2, one student is the Sun and will hold a flashlight and shine it at the stomach of the other student who is Earth… • The sun (flashlight holder) stands still, while the Earth ROTATES (spins) in a circle—mimicking the motion of the Earth on ...
How Do We Know the Earth is Spherical?
... • Spherical Earth “rotates” once in 24 hours (we will see next time that it’s actually 23h 56m) ...
... • Spherical Earth “rotates” once in 24 hours (we will see next time that it’s actually 23h 56m) ...
Structure of the Solar System - Beck-Shop
... Observations by the Infra-Red Astronomical Satellite (IRAS) have revealed the presence of dust bands in the asteroid belt and dust trails associated with comets. The study of planetary rings has also undergone radical changes; prior to 1977 it was believed that Saturn was the only ringed planet, whe ...
... Observations by the Infra-Red Astronomical Satellite (IRAS) have revealed the presence of dust bands in the asteroid belt and dust trails associated with comets. The study of planetary rings has also undergone radical changes; prior to 1977 it was believed that Saturn was the only ringed planet, whe ...
15_Uranus Litho.indd
... Uranus was discovered in 1781 by astronomer William Herschel. The seventh planet from the Sun is so distant that it takes 84 years to complete one orbit. Uranus, with no solid surface, is one of the gas giant planets (the others are Jupiter, Saturn, and Neptune). ...
... Uranus was discovered in 1781 by astronomer William Herschel. The seventh planet from the Sun is so distant that it takes 84 years to complete one orbit. Uranus, with no solid surface, is one of the gas giant planets (the others are Jupiter, Saturn, and Neptune). ...
Astrobiology
Astrobiology is the study of the origin, evolution, distribution, and future of life in the universe: extraterrestrial life and life on Earth. This interdisciplinary field encompasses the search for habitable environments in our Solar System and habitable planets outside our Solar System, the search for evidence of prebiotic chemistry, laboratory and field research into the origins and early evolution of life on Earth, and studies of the potential for life to adapt to challenges on Earth and in outer space. Astrobiology addresses the question of whether life exists beyond Earth, and how humans can detect it if it does. (The term exobiology is similar but more specific—it covers the search for life beyond Earth, and the effects of extraterrestrial environments on living things.)Astrobiology makes use of physics, chemistry, astronomy, biology, molecular biology, ecology, planetary science, geography, and geology to investigate the possibility of life on other worlds and help recognize biospheres that might be different from the biosphere on Earth. The origin and early evolution of life is an inseparable part of the discipline of astrobiology. Astrobiology concerns itself with interpretation of existing scientific data; given more detailed and reliable data from other parts of the universe, the roots of astrobiology itself—physics, chemistry and biology—may have their theoretical bases challenged. Although speculation is entertained to give context, astrobiology concerns itself primarily with hypotheses that fit firmly into existing scientific theories.The chemistry of life may have begun shortly after the Big Bang, 13.8 billion years ago, during a habitable epoch when the Universe was only 10–17 million years old. According to the panspermia hypothesis, microscopic life—distributed by meteoroids, asteroids and other small Solar System bodies—may exist throughout the universe. According to research published in August 2015, very large galaxies may be more favorable to the creation and development of habitable planets than smaller galaxies, like the Milky Way galaxy. Nonetheless, Earth is the only place in the universe known to harbor life. Estimates of habitable zones around other stars, along with the discovery of hundreds of extrasolar planets and new insights into the extreme habitats here on Earth, suggest that there may be many more habitable places in the universe than considered possible until very recently.Current studies on the planet Mars by the Curiosity and Opportunity rovers are now searching for evidence of ancient life as well as plains related to ancient rivers or lakes that may have been habitable. The search for evidence of habitability, taphonomy (related to fossils), and organic molecules on the planet Mars is now a primary NASA objective on Mars.