How do we know how the Solar System is
... The time it takes for a planet to go around the Sun is related to the size of its orbit; more distant planets take longer to go around. (Period in years)^2 = (semimajoraxis in a.u.)^3 ...
... The time it takes for a planet to go around the Sun is related to the size of its orbit; more distant planets take longer to go around. (Period in years)^2 = (semimajoraxis in a.u.)^3 ...
search for extrasolar planets
... History of planetary systems • Dynamics, TNOs imply early evolution of orbits in solar system • Disk interactions predicted hot Jupiters! • Resonances imply ongoing interaction in other systems • Not particularly aligned with Milky Way • Pulsar planets may be “reborn” systems ...
... History of planetary systems • Dynamics, TNOs imply early evolution of orbits in solar system • Disk interactions predicted hot Jupiters! • Resonances imply ongoing interaction in other systems • Not particularly aligned with Milky Way • Pulsar planets may be “reborn” systems ...
File - North Bay Astronomy Club
... Saturn early evening until dawn, shines near Mars. And both Mars and Saturn are near a fainter object – still one of the sky’s brightest stars – Antares in the constellation Scorpius. Mercury transits the sun on May 9, 2016. Usually, you can’t see Mercury at this juncture because it swings to the no ...
... Saturn early evening until dawn, shines near Mars. And both Mars and Saturn are near a fainter object – still one of the sky’s brightest stars – Antares in the constellation Scorpius. Mercury transits the sun on May 9, 2016. Usually, you can’t see Mercury at this juncture because it swings to the no ...
Owsley Brown II Portable Planetarium K-2 Program
... ● The sun is a star that appears larger and brighter than other stars because it is closer. Stars range greatly in their distance from ...
... ● The sun is a star that appears larger and brighter than other stars because it is closer. Stars range greatly in their distance from ...
Astronomy 101 Course Review and Summary
... Moons (a.k.a. satellites) orbit the planets; some moons are large. ...
... Moons (a.k.a. satellites) orbit the planets; some moons are large. ...
Observing the Solar System
... continue in a straight line or a stationary object to remain in place. The more mass an object has, the more inertia it has. • The force of gravity attracts all objects towards each other. No one is for sure how gravity works or why it is present. • As the planets are in orbit around the sun the sun ...
... continue in a straight line or a stationary object to remain in place. The more mass an object has, the more inertia it has. • The force of gravity attracts all objects towards each other. No one is for sure how gravity works or why it is present. • As the planets are in orbit around the sun the sun ...
ASTR 1120H – Spring Semester 2010 Exam 1 – Answers The AU is
... lenses must be totally free of defects, they suffer chromatic aberration, some of the incident light is absorbed in the lens, and the objective lens can only be supported from its edges. None of these drawbacks occur in ...
... lenses must be totally free of defects, they suffer chromatic aberration, some of the incident light is absorbed in the lens, and the objective lens can only be supported from its edges. None of these drawbacks occur in ...
Slide 1
... To measure the immense distances in space, astronomers have created a unit called the astronomical unit (AU). 1 AU is equal to the distance between Earth and the Sun, which is about 150,000,000 km. ...
... To measure the immense distances in space, astronomers have created a unit called the astronomical unit (AU). 1 AU is equal to the distance between Earth and the Sun, which is about 150,000,000 km. ...
Tips Packet part 2 - Doral Academy Preparatory School
... • ABSOLUTE MAGNITUDE (brightness)- How bright it truly is • Brightness the star is have if viewed from a standard distance of 32.6 light years • luminosity — the amount of energy (light) that a star emits from its surface. ...
... • ABSOLUTE MAGNITUDE (brightness)- How bright it truly is • Brightness the star is have if viewed from a standard distance of 32.6 light years • luminosity — the amount of energy (light) that a star emits from its surface. ...
Chaper 1 part b
... are due to motions of the Earth 1. ROTATION=the spin of the Earth on its axis. It takes one day for the Earth to complete one rotation. 2. REVOLUTION=the movement of the Earth in orbit around the sun. It takes one year for the Earth to complete one ...
... are due to motions of the Earth 1. ROTATION=the spin of the Earth on its axis. It takes one day for the Earth to complete one rotation. 2. REVOLUTION=the movement of the Earth in orbit around the sun. It takes one year for the Earth to complete one ...
Chapter 39
... – Mostly hydrogen & Helium – Less dense than water – 23 moons, some rings – Gives off more heat than it ...
... – Mostly hydrogen & Helium – Less dense than water – 23 moons, some rings – Gives off more heat than it ...
Basics of Atmospheres and their Formation
... How a Planet Retains an Atmosphere • Surface gravity must be high enough and • surface temperature must be low enough, that the atmosphere molecules don’t leak away during the 4.6 billion years since formation. • Outer (i.e. Jovian) planets are so distant and so cold, they formed from seeds of ice ...
... How a Planet Retains an Atmosphere • Surface gravity must be high enough and • surface temperature must be low enough, that the atmosphere molecules don’t leak away during the 4.6 billion years since formation. • Outer (i.e. Jovian) planets are so distant and so cold, they formed from seeds of ice ...
Notes and Equations
... The most basic astronomical observation is that the stars “hang together” as they move across the sky in the diurnal motion. This indicates that we should define a coordinate system fixed with respect to the stars. Just like we can specify the latitude and longitude of a place on Earth, we can speci ...
... The most basic astronomical observation is that the stars “hang together” as they move across the sky in the diurnal motion. This indicates that we should define a coordinate system fixed with respect to the stars. Just like we can specify the latitude and longitude of a place on Earth, we can speci ...
Mountain Skies March 7 2016
... opposite the sun in the sky. Since that’s the case Jupiter rises as the sun sets and sets in the mornings as the sun rises. It also means that Jupiter is at its closest to us as the earth, which is moving the faster, passes by Jupiter on the inside track around the sun. The next few weeks are a good ...
... opposite the sun in the sky. Since that’s the case Jupiter rises as the sun sets and sets in the mornings as the sun rises. It also means that Jupiter is at its closest to us as the earth, which is moving the faster, passes by Jupiter on the inside track around the sun. The next few weeks are a good ...
Are there Earth-like planets around other stars?
... Solar System shortly after Earth was formed. If they had still been around today, regular collisions with them would most likely have removed our atmosphere and evaporated the oceans, preventing life from gaining ...
... Solar System shortly after Earth was formed. If they had still been around today, regular collisions with them would most likely have removed our atmosphere and evaporated the oceans, preventing life from gaining ...
Intro To 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 ...
Chapter 15 Notes - Valdosta State University
... perfectly acceptable when you are trying to find some place like Atlanta or Miami. More expensive devices are accurate to within 1 meter and the best GPS receivers can determine a location within 1 centimeter. Time Time is a way of expressing the relative order of events. It is important to remember ...
... perfectly acceptable when you are trying to find some place like Atlanta or Miami. More expensive devices are accurate to within 1 meter and the best GPS receivers can determine a location within 1 centimeter. Time Time is a way of expressing the relative order of events. It is important to remember ...
Powerpoint - BU Imaging Science
... Tycho Brahe (1546-1601) • Both Ptolemy’s Earth-centred model and Copernicus’s Sun-centred model fitted existing observations equally well. • Tycho decided to make better observations so that these theories could be tested • He observed the planets for over thirty years. Without a telescope, he used ...
... Tycho Brahe (1546-1601) • Both Ptolemy’s Earth-centred model and Copernicus’s Sun-centred model fitted existing observations equally well. • Tycho decided to make better observations so that these theories could be tested • He observed the planets for over thirty years. Without a telescope, he used ...
Implications of the Search and Discovery
... Release data for confirmation by others Confirm and monitor more data recordings Stop all noise at appropriate frequencies Do not send a response signal Advise and consult with other international organizations as to the procedure for ...
... Release data for confirmation by others Confirm and monitor more data recordings Stop all noise at appropriate frequencies Do not send a response signal Advise and consult with other international organizations as to the procedure for ...
TESSMANN PLANETARIUM GUIDE TO THE SOLAR SYSTEM
... However, there are many stars that are much bigger and brighter than our Sun. Our Sun is a mere runt compared to the biggest of these. The Sun is a G type star and takes about 225 million years to make one orbit around the Milky Way. It is known as a yellow dwarf, although its color is actually more ...
... However, there are many stars that are much bigger and brighter than our Sun. Our Sun is a mere runt compared to the biggest of these. The Sun is a G type star and takes about 225 million years to make one orbit around the Milky Way. It is known as a yellow dwarf, although its color is actually more ...
Week 9
... It will bulge outward at its equator. It will bulge outward at its poles (like a football). It will expand in all directions. It will pull inward all over. Nothing really - it will just spin normally. ...
... It will bulge outward at its equator. It will bulge outward at its poles (like a football). It will expand in all directions. It will pull inward all over. Nothing really - it will just spin normally. ...
Day-11
... the idea of “uniform circular motion.” • Objects moved in perfect circles at uniform speeds. ...
... the idea of “uniform circular motion.” • Objects moved in perfect circles at uniform speeds. ...
CHAPTER 4 FINAL REVIEW QUESTIONS MULTIPLE CHOICE
... 12. The Copernican system was no more accurate than the Ptolemaic system in predicting the positions of the planets because a. ...
... 12. The Copernican system was no more accurate than the Ptolemaic system in predicting the positions of the planets because a. ...
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.