Unit 12: The Formation of the Earth
... Brahmins of India believed that the earth was eternal, as did Aristotle. In early JudeoChristian cultures, estimates of the age of the solar system were based on the Bible. The traditional Jewish calendar starts from 3760 BCE, which is taken to be a date for the creation of the earth. In 1650, Angli ...
... Brahmins of India believed that the earth was eternal, as did Aristotle. In early JudeoChristian cultures, estimates of the age of the solar system were based on the Bible. The traditional Jewish calendar starts from 3760 BCE, which is taken to be a date for the creation of the earth. In 1650, Angli ...
Physics Today - Earth, Environmental and Planetary Sciences
... debris from impacts between those early-forming planetesimals. The oldest meteorites are found to be about 4.568 billion years in age. We also have strong theoretical reasons to suspect that somewhat larger bodies—perhaps of a size the order of Earth’s moon but up to and including the size of Mars— ...
... debris from impacts between those early-forming planetesimals. The oldest meteorites are found to be about 4.568 billion years in age. We also have strong theoretical reasons to suspect that somewhat larger bodies—perhaps of a size the order of Earth’s moon but up to and including the size of Mars— ...
Observations of gravitational microlensing events with OSIRIS
... absolute value of the relative proper motion between lens and source star. The satellite-based parallax measurement then leads to a direct measurement of the mass of the lens star. We will show below that ~50 events will be observed with OSIRIS, therefore a few events involving a lens binary are exp ...
... absolute value of the relative proper motion between lens and source star. The satellite-based parallax measurement then leads to a direct measurement of the mass of the lens star. We will show below that ~50 events will be observed with OSIRIS, therefore a few events involving a lens binary are exp ...
Astronews - Hawaiian Astronomical Society
... the west shortly after sunset. Jupiter is the largest and most massive planet in the solar system, yet Venus is the planet that comes closest to our world. On June 30th, Venus and Jupiter made their closest approach to one another as seen from Earth—a conjunction—coming within just 0.4° of one anoth ...
... the west shortly after sunset. Jupiter is the largest and most massive planet in the solar system, yet Venus is the planet that comes closest to our world. On June 30th, Venus and Jupiter made their closest approach to one another as seen from Earth—a conjunction—coming within just 0.4° of one anoth ...
Power Punt on Binary Asteroids
... Lightcurves of asteroids • Asteroids spin (typically in 8 hours) and as they spin, they change brightness as we see more or less reflected sunlight • By measuring lightcurves (brightness vs time) from different viewing angles, can get 3dim shape of asteroid • Binary asteroids show additional “bumps ...
... Lightcurves of asteroids • Asteroids spin (typically in 8 hours) and as they spin, they change brightness as we see more or less reflected sunlight • By measuring lightcurves (brightness vs time) from different viewing angles, can get 3dim shape of asteroid • Binary asteroids show additional “bumps ...
Andy Fraknoi
... Which types of asteroids were never part of a planet? Which types of asteroids were part of a planet? The asteroid belt lies between which planets? Why is the Asteroid belt where it is? If there are so many Asteroids in the Asteroid belt, how can spacecraft fly through the asteroid belt without coll ...
... Which types of asteroids were never part of a planet? Which types of asteroids were part of a planet? The asteroid belt lies between which planets? Why is the Asteroid belt where it is? If there are so many Asteroids in the Asteroid belt, how can spacecraft fly through the asteroid belt without coll ...
Jupiter is 90000 miles in diameter. It is 10 times the size of the earth
... The atmosphere appears as alternating bands of light regions, called zones, and dark regions called belts, that run parallel to the equator. The zones are higher in altitude than the belts, and are lower in temperature. It is believed that the belts represent descending areas of low pressure. Jupi ...
... The atmosphere appears as alternating bands of light regions, called zones, and dark regions called belts, that run parallel to the equator. The zones are higher in altitude than the belts, and are lower in temperature. It is believed that the belts represent descending areas of low pressure. Jupi ...
Study Guide for Astronomy 10A Prologue What is the purpose of
... Which types of asteroids were never parts of a planet? Which types of asteroids were parts of a planet? The asteroid belt lies between which planets? Why is the Asteroid belt where it is? If there are so many Asteroids in the Asteroid belt, how can spacecraft fly through the asteroid belt without co ...
... Which types of asteroids were never parts of a planet? Which types of asteroids were parts of a planet? The asteroid belt lies between which planets? Why is the Asteroid belt where it is? If there are so many Asteroids in the Asteroid belt, how can spacecraft fly through the asteroid belt without co ...
Basic Astronomical Estimates
... however, there have been just a few men who were able to measure the circumference accurately. In this section the focus will be on Eratosthenes and Biruni, two mathematicians who used two different methods in different eras to obtain the measurement. Pythagoras (6th century BC) was one of the first ...
... however, there have been just a few men who were able to measure the circumference accurately. In this section the focus will be on Eratosthenes and Biruni, two mathematicians who used two different methods in different eras to obtain the measurement. Pythagoras (6th century BC) was one of the first ...
Perseids meteor showers are looking good
... We even know about how fast the meteorites that we can see are traveling across our sky and about how many we might see in an hour. Meteor Shower ...
... We even know about how fast the meteorites that we can see are traveling across our sky and about how many we might see in an hour. Meteor Shower ...
File - Starry Starry Night!
... moon that was destroyed by a major impact. Hyperion shows extensive cratering because of its distance from Saturn as a result experienced very little tidal warming that might blur or erase earlier features. However, the Hyperion craters are particularly deep. The result is a curiously punched-in loo ...
... moon that was destroyed by a major impact. Hyperion shows extensive cratering because of its distance from Saturn as a result experienced very little tidal warming that might blur or erase earlier features. However, the Hyperion craters are particularly deep. The result is a curiously punched-in loo ...
Document
... Sun. Look for it above the sunset horizon far below and perhaps a bit right of Venus and Jupiter. Mercury remains at nearly the same place above your horizon each evening this week, but it's fading day by day. Monday, March 5 · Mars is at its closest to Earth for this apparition: 100.8 million km (6 ...
... Sun. Look for it above the sunset horizon far below and perhaps a bit right of Venus and Jupiter. Mercury remains at nearly the same place above your horizon each evening this week, but it's fading day by day. Monday, March 5 · Mars is at its closest to Earth for this apparition: 100.8 million km (6 ...
Planets
... a few kilometres per second. Since this was soon less than the escape velocities of the outer proto-planets, the hydrogen was accumulated by those proto-planets - likewise the helium. In the inner part of the nebula, the thermal velocities of hydrogen and helium were around, ten kilometres per secon ...
... a few kilometres per second. Since this was soon less than the escape velocities of the outer proto-planets, the hydrogen was accumulated by those proto-planets - likewise the helium. In the inner part of the nebula, the thermal velocities of hydrogen and helium were around, ten kilometres per secon ...
Nemesis - The Evergreen State College
... test the 19MJupiter that I have earlier presented. First, assuming that all planets in the Solar System have negligible effects on the Sun, a Saturn size Nemesis would also have a negligible effect on Sol and therefor be undetectable. To test the 19 MJupiter we will use Kepler’s First law to find th ...
... test the 19MJupiter that I have earlier presented. First, assuming that all planets in the Solar System have negligible effects on the Sun, a Saturn size Nemesis would also have a negligible effect on Sol and therefor be undetectable. To test the 19 MJupiter we will use Kepler’s First law to find th ...
Unit 8 Chapter 28 Notes
... As many as seven eclipses may occur during a calendar year. Four may be lunar, and three may be solar or vice versa. However, total eclipses of the sun and the moon occur infrequently. Solar and lunar eclipses do not occur during every lunar orbit. This is because the orbit of the moon is not in the ...
... As many as seven eclipses may occur during a calendar year. Four may be lunar, and three may be solar or vice versa. However, total eclipses of the sun and the moon occur infrequently. Solar and lunar eclipses do not occur during every lunar orbit. This is because the orbit of the moon is not in the ...
grade v and vi - Sacred Heart CMI Public School
... On the far side of the asteroid belt are the four gas giants - Jupiter, Saturn, Uranus and Neptune. These planets are much bigger than Earth, but very lightweight for their size. They are mostly made of hydrogen and helium. Until recently, the furthest known planet was an icy world called Pluto. How ...
... On the far side of the asteroid belt are the four gas giants - Jupiter, Saturn, Uranus and Neptune. These planets are much bigger than Earth, but very lightweight for their size. They are mostly made of hydrogen and helium. Until recently, the furthest known planet was an icy world called Pluto. How ...
NEO lecture 02 - Observations of NEOs
... What was the impact energy of the ‘Sudan event’ compared to the Hiroshima bomb? The ‘Sudan event’ (2008 TC3) was an elongated object with <10 m size – assume 5 m x 5 m x 5 m Assume an entry velocity of 15 km/s Densities of recovered meteorites varied from 2 to 3 g/cm3 – assume 2.5 g/cm3 Impa ...
... What was the impact energy of the ‘Sudan event’ compared to the Hiroshima bomb? The ‘Sudan event’ (2008 TC3) was an elongated object with <10 m size – assume 5 m x 5 m x 5 m Assume an entry velocity of 15 km/s Densities of recovered meteorites varied from 2 to 3 g/cm3 – assume 2.5 g/cm3 Impa ...
CML_DPS_PressBriefing_10Oct2006
... - The composition of the HD 69830 dust resembles that of a disrupted P or D-type asteroid. The amount of mass responsible for the observed emission is the equivalent of a ...
... - The composition of the HD 69830 dust resembles that of a disrupted P or D-type asteroid. The amount of mass responsible for the observed emission is the equivalent of a ...
PLANETARY SCIENCE
... Cosmos is another word for the whole universe. Orbit radius is the distance at which an object (planet, satellite, etc) orbits another object, such as the distance at which Earth orbits the Sun. Some distances and orbit radii are reported in kilometers, but others are reported in units for which the ...
... Cosmos is another word for the whole universe. Orbit radius is the distance at which an object (planet, satellite, etc) orbits another object, such as the distance at which Earth orbits the Sun. Some distances and orbit radii are reported in kilometers, but others are reported in units for which the ...
Origin of the Earth and of the Solar System
... Our actual stat of knowledge is, that the first planetesimals in our Solar system formed 4 567 million years ago within the protosolar cloud (with an uncertainty of just 2 million years). Right: Ca/Al-rich inclusion within Allende-Meteorite with a diameter of ~1 cm (the oldest material, which could ...
... Our actual stat of knowledge is, that the first planetesimals in our Solar system formed 4 567 million years ago within the protosolar cloud (with an uncertainty of just 2 million years). Right: Ca/Al-rich inclusion within Allende-Meteorite with a diameter of ~1 cm (the oldest material, which could ...
Kuiper Belt
... • The Chelyabinsk meteor was only around 20 m (100 ft) in diameter, but it weighed more than the Eiffel Tower. • Bigger still was an explosion in 1908 by something suspected to be either a comet or asteroid, known as the Tunguska event. – It landed in Siberia and cleared an entire forest with a blas ...
... • The Chelyabinsk meteor was only around 20 m (100 ft) in diameter, but it weighed more than the Eiffel Tower. • Bigger still was an explosion in 1908 by something suspected to be either a comet or asteroid, known as the Tunguska event. – It landed in Siberia and cleared an entire forest with a blas ...
Earth, Moon and Mars - International Space Science Institute
... The ages of Earth, Moon and Mars. This diagram shows the distribution of ages of rocks from Earth, Moon and Mars. Earth has been geologically very active throughout history. As a result, the geological record of the early times has largely been overwritten. The Moon is much smaller than the Earth, a ...
... The ages of Earth, Moon and Mars. This diagram shows the distribution of ages of rocks from Earth, Moon and Mars. Earth has been geologically very active throughout history. As a result, the geological record of the early times has largely been overwritten. The Moon is much smaller than the Earth, a ...
Research Information for Space Bodies Project
... 9. Without the sun's intense energy there would be no life on Earth. 10. The temperature at the sun's core is about 15 million degrees Celsius (27 million degrees Fahrenheit). Asteroids Asteroids are rocky, airless worlds that orbit our sun, but are too small to be called planets. Tens of thousands ...
... 9. Without the sun's intense energy there would be no life on Earth. 10. The temperature at the sun's core is about 15 million degrees Celsius (27 million degrees Fahrenheit). Asteroids Asteroids are rocky, airless worlds that orbit our sun, but are too small to be called planets. Tens of thousands ...
October 28, 2014
... 12:20 p.m., Wednesday, October 29 - ISS Expedition 41 In-Flight Interviews with Nashville Public Radio and WCBY-TV, Tri-Cities TV for Tennessee and Virginia with NASA Flight Engineer Barry Wilmore (all channels) 8:05 a.m., Thursday, October 30 - ISS Expedition 41 In-Flight Event for ESA with German ...
... 12:20 p.m., Wednesday, October 29 - ISS Expedition 41 In-Flight Interviews with Nashville Public Radio and WCBY-TV, Tri-Cities TV for Tennessee and Virginia with NASA Flight Engineer Barry Wilmore (all channels) 8:05 a.m., Thursday, October 30 - ISS Expedition 41 In-Flight Event for ESA with German ...
Study Notes Lesson 13 Gravitational Interactions
... The ocean nearest the moon is pulled upward toward to moon., while the main body of Earth is pulled toward the moon also— away from the ocean on the far side. It is because Earth is closer to the moon than the far-side ocean is. ...
... The ocean nearest the moon is pulled upward toward to moon., while the main body of Earth is pulled toward the moon also— away from the ocean on the far side. It is because Earth is closer to the moon than the far-side ocean is. ...
Impact event
An impact event is a collision between celestial objects causing measurable effects. Impact events have physical consequences and have been found to regularly occur in planetary systems, though the most frequent involve asteroids, comets or meteoroids and have minimal impact. When large objects impact terrestrial planets like the Earth, there can be significant physical and biospheric consequences, though atmospheres mitigate many surface impacts through atmospheric entry. Impact craters and structures are dominant landforms on many of the Solar System's solid objects and present the strongest empirical evidence for their frequency and scale.Impact events appear to have played a significant role in the evolution of the Solar System since its formation. Major impact events have significantly shaped Earth's history, have been implicated in the formation of the Earth–Moon system, the evolutionary history of life, the origin of water on Earth and several mass extinctions. Notable impact events include the Chicxulub impact, 66 million years ago, believed to be the cause of the Cretaceous–Paleogene extinction event.Throughout recorded history, hundreds of Earth impacts (and exploding bolides) have been reported, with some occurrences causing deaths, injuries, property damage, or other significant localised consequences. One of the best-known recorded impacts in modern times was the Tunguska event, which occurred in Siberia, Russia, in 1908. The 2013 Chelyabinsk meteor event is the only known such event to result in a large number of injuries, and the Chelyabinsk meteor is the largest recorded object to have encountered the Earth since the Tunguska event.The most notable non-terrestrial event is the Comet Shoemaker–Levy 9 impact, which provided the first direct observation of an extraterrestrial collision of Solar System objects, when the comet broke apart and collided with Jupiter in July 1994. Most of the observed extrasolar impacts are the slow collision of galaxies; however, in 2014, one of the first massive terrestrial impacts observed was detected around the star NGC 2547 ID8 by NASA's Spitzer space telescope and confirmed by ground observations. Impact events have been a plot and background element in science fiction.