habitability - Dr. Jonti Horner
... the Sun. It seems likely that metallicities less than about half that of the Sun might yield rocky planets no more than about 10 % the mass of Earth (i.e. no more than about the mass of Mars). Such planets are likely to lose their atmospheres to space and to the surface within about 1000 Myr, and th ...
... the Sun. It seems likely that metallicities less than about half that of the Sun might yield rocky planets no more than about 10 % the mass of Earth (i.e. no more than about the mass of Mars). Such planets are likely to lose their atmospheres to space and to the surface within about 1000 Myr, and th ...
9J Gravity and Space
... orbit around the Sun. Earth’s gravity – The force of attraction that pulls objects towards the centre of the Earth. gravity – The force of attraction between any two objects that have mass. mass – The amount of matter that an object is made of, measured in kilograms (kg). newton – The unit used to m ...
... orbit around the Sun. Earth’s gravity – The force of attraction that pulls objects towards the centre of the Earth. gravity – The force of attraction between any two objects that have mass. mass – The amount of matter that an object is made of, measured in kilograms (kg). newton – The unit used to m ...
PDF Version
... brightness that we can see ourselves, is equal to the intrinsic brightness divided by the square of the distance from us to the star. Astronomers used Cepheid variables in a nearby galaxy, which are all about the same distance from us, to find the correlation between the period and the intrinsic bri ...
... brightness that we can see ourselves, is equal to the intrinsic brightness divided by the square of the distance from us to the star. Astronomers used Cepheid variables in a nearby galaxy, which are all about the same distance from us, to find the correlation between the period and the intrinsic bri ...
So What All Is Out There, Anyway?
... beautiful glowing clouds of gas, called nebulas, spreading out and speeding away from dying stars. The larger you get, the more stars you see. It seems the whole universe is filled with stars. But eventually, you grow large enough that you start seeing vast areas of space where there are very few st ...
... beautiful glowing clouds of gas, called nebulas, spreading out and speeding away from dying stars. The larger you get, the more stars you see. It seems the whole universe is filled with stars. But eventually, you grow large enough that you start seeing vast areas of space where there are very few st ...
SWFAS August 16 Newsletter - Southwest Florida Astronomical
... "Joy" at the Jet Propulsion Laboratory's mission control center today is spelled JOI — for Jupiter Orbital Insertion. July 4th fireworks erupted in the outer solar system overnight, as theJuno probe fired its main engine and entered a polar orbit around Jupiter at 11:53 p.m. EDT (Earth receive time) ...
... "Joy" at the Jet Propulsion Laboratory's mission control center today is spelled JOI — for Jupiter Orbital Insertion. July 4th fireworks erupted in the outer solar system overnight, as theJuno probe fired its main engine and entered a polar orbit around Jupiter at 11:53 p.m. EDT (Earth receive time) ...
class 4, S11 (ch. 2c and 3)Jan20
... “lap” another planet (or when Mercury or Venus lap us) • But very difficult to explain if you think that Earth is the center of the universe! • In fact, ancients considered but rejected the correct explanation… ...
... “lap” another planet (or when Mercury or Venus lap us) • But very difficult to explain if you think that Earth is the center of the universe! • In fact, ancients considered but rejected the correct explanation… ...
Kindergarten Kit Manual - Alberta Science Network
... our solar system. All of our planets orbit the Sun, which is a fairly small star. Stars are not planets as they produce energy by converting hydrogen into helium. There are two main types of planets: rocky/terrestrial planets and gas giants. The smaller planets in our solar system (Mercury, Venus, E ...
... our solar system. All of our planets orbit the Sun, which is a fairly small star. Stars are not planets as they produce energy by converting hydrogen into helium. There are two main types of planets: rocky/terrestrial planets and gas giants. The smaller planets in our solar system (Mercury, Venus, E ...
Triple Conjunction of Jupiter and Saturn
... those proposed by Parpola, although they are fairly close. There are some software which can be used to track the movements of planets in any year, including 7 BC, and someone presented these conjunctions at the Foundation a year ago. However, I was not sure if these computer programs calculate the ...
... those proposed by Parpola, although they are fairly close. There are some software which can be used to track the movements of planets in any year, including 7 BC, and someone presented these conjunctions at the Foundation a year ago. However, I was not sure if these computer programs calculate the ...
Orbits
... mathematician, astronomer, and philosopher Galileo's pupil Vincenzo Viviani stated that Galileo had dropped balls of the same material, but different masses, from the Leaning Tower of Pisa to demonstrate that their time of descent was independent of their mass. ...
... mathematician, astronomer, and philosopher Galileo's pupil Vincenzo Viviani stated that Galileo had dropped balls of the same material, but different masses, from the Leaning Tower of Pisa to demonstrate that their time of descent was independent of their mass. ...
Volume 2 (Issue 7), July 2013
... but some type of as yet unknown star-like objects. It also appeared that the radio emissions were coming from a pair of lobes surrounding these faint star-like objects. It was also discovered that these objects were located well outside our own galaxy. Quasars are very mysterious objects. Astronomer ...
... but some type of as yet unknown star-like objects. It also appeared that the radio emissions were coming from a pair of lobes surrounding these faint star-like objects. It was also discovered that these objects were located well outside our own galaxy. Quasars are very mysterious objects. Astronomer ...
movement in the solar system
... among the stars. These are the planets. Planets, like the earth and moon do not make light. They get light from the sun. It has been known for more than 500 years that planets are satellites of the sun. That means that they go around the sun. ...
... among the stars. These are the planets. Planets, like the earth and moon do not make light. They get light from the sun. It has been known for more than 500 years that planets are satellites of the sun. That means that they go around the sun. ...
Investigation 1 Solar Nebula Theory Student Guide 3_16_13_draft
... Within the Milky Way Galaxy, towards one of the outer edges, is a relatively small star, our Sun. If we were to focus more closely around the parts of the galaxy near our Sun, we see evidence of eight planets that are in orbit around the Sun. These planets (Mercury, Venus, Earth, Mars, Jupiter, Satu ...
... Within the Milky Way Galaxy, towards one of the outer edges, is a relatively small star, our Sun. If we were to focus more closely around the parts of the galaxy near our Sun, we see evidence of eight planets that are in orbit around the Sun. These planets (Mercury, Venus, Earth, Mars, Jupiter, Satu ...
Vulcan Chasers
... tlii frigid realm beyond Uranus, the hitherto most remote known planet. Neptune had been sighted by Johann Galle of the Berlin Observatory less than one degree from the position predicted by Le Verrier based on its gravitational disturbances of the motion of Uranus. The discovery was hailed as a rem ...
... tlii frigid realm beyond Uranus, the hitherto most remote known planet. Neptune had been sighted by Johann Galle of the Berlin Observatory less than one degree from the position predicted by Le Verrier based on its gravitational disturbances of the motion of Uranus. The discovery was hailed as a rem ...
ASTR 104.3 - University of Saskatchewan
... made by Galileo—the moons of Jupiter. You will utilize the telescope skills you’ve gained in previous labs to center your scope on a relatively small object so that you can see the four moons discovered by Galileo. You will then use computer-simulated observations of the Galilean moons to describe t ...
... made by Galileo—the moons of Jupiter. You will utilize the telescope skills you’ve gained in previous labs to center your scope on a relatively small object so that you can see the four moons discovered by Galileo. You will then use computer-simulated observations of the Galilean moons to describe t ...
May 2016 - Pomona Valley Amateur Astronomers
... PVAA has reserved the 100-inch telescope at Mount Wilson Observatory on Friday, June 3, 2016. We have the 60-inch telescope the next night, Saturday, June 4, 2016. Having the telescopes on consecutive nights will allow those who wish, to compare the two. Besides being historic instruments where grea ...
... PVAA has reserved the 100-inch telescope at Mount Wilson Observatory on Friday, June 3, 2016. We have the 60-inch telescope the next night, Saturday, June 4, 2016. Having the telescopes on consecutive nights will allow those who wish, to compare the two. Besides being historic instruments where grea ...
What do we mean by habitable zone?
... (373/288)−2 ×1 AU= 0.6 AU to (273/288)−1 ×1 AU= 1.1 AU. In principle this would include Venus but not Mars. As an indication of how different assumptions can change the range, I have also seen ranges such as 0.95 AU to 1.37 AU for the habitable zone. It’s not exact. One reason is that there are many ...
... (373/288)−2 ×1 AU= 0.6 AU to (273/288)−1 ×1 AU= 1.1 AU. In principle this would include Venus but not Mars. As an indication of how different assumptions can change the range, I have also seen ranges such as 0.95 AU to 1.37 AU for the habitable zone. It’s not exact. One reason is that there are many ...
PHYSICS 1500 - The University of Sydney
... The illustration at left shows an artist’s impression of a ‘hot Jupiter’ – a giant planet in a very close orbit around its parent star. The first such planet discovered was 51 Pegasi b which takes 4.23 days to orbit a sun-like star. The system is about 50 light years from Earth. The planet was found ...
... The illustration at left shows an artist’s impression of a ‘hot Jupiter’ – a giant planet in a very close orbit around its parent star. The first such planet discovered was 51 Pegasi b which takes 4.23 days to orbit a sun-like star. The system is about 50 light years from Earth. The planet was found ...
CHAPTER 20
... pressure of Triton doubled in less than 10 years! Scientists hope to use the global warming trends on Triton to understand warming patterns on Earth. Because Triton is a much similar world than Earth—with a thinner atmosphere, a surface of frozen nitrogen, and no oceans—it is a good place to study e ...
... pressure of Triton doubled in less than 10 years! Scientists hope to use the global warming trends on Triton to understand warming patterns on Earth. Because Triton is a much similar world than Earth—with a thinner atmosphere, a surface of frozen nitrogen, and no oceans—it is a good place to study e ...
CHAPTER 20
... pressure of Triton doubled in less than 10 years! Scientists hope to use the global warming trends on Triton to understand warming patterns on Earth. Because Triton is a much similar world than Earth—with a thinner atmosphere, a surface of frozen nitrogen, and no oceans—it is a good place to study e ...
... pressure of Triton doubled in less than 10 years! Scientists hope to use the global warming trends on Triton to understand warming patterns on Earth. Because Triton is a much similar world than Earth—with a thinner atmosphere, a surface of frozen nitrogen, and no oceans—it is a good place to study e ...
sky science study notes
... Planets have different amounts of moons (natural satellites). Mercury and Venus don’t have any moons. Jupiter has around 63 moons. ...
... Planets have different amounts of moons (natural satellites). Mercury and Venus don’t have any moons. Jupiter has around 63 moons. ...
S LAR SYSTEM - Fleet Science Center
... The force of gravity causes the dropped objects to fall to the ground. In a vacuum or on the Moon, the objects would land at the same time regardless of their shape, size, or mass. Because of the atmosphere here on Earth however, air resistance can make some objects fall slower than expected. For in ...
... The force of gravity causes the dropped objects to fall to the ground. In a vacuum or on the Moon, the objects would land at the same time regardless of their shape, size, or mass. Because of the atmosphere here on Earth however, air resistance can make some objects fall slower than expected. For in ...
Kepler, Newton, and laws of motion
... Empirical, based on observations; NOT a theory (in the sense of Newton’s laws). So they are “laws” in the sense of formulas that express some regularity or correlation, but they don’t explain the observed phenomena in terms of something more basic (e.g. laws of motion, gravity--that waited for Newto ...
... Empirical, based on observations; NOT a theory (in the sense of Newton’s laws). So they are “laws” in the sense of formulas that express some regularity or correlation, but they don’t explain the observed phenomena in terms of something more basic (e.g. laws of motion, gravity--that waited for Newto ...
HighFour General Sciences Round 8 Category A: Grades 4 – 5
... system: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune — and Planet Nine. A The distance from Earth to the sun is called an astronomical unit, or AU, which is used to ...
... system: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune — and Planet Nine. A The distance from Earth to the sun is called an astronomical unit, or AU, which is used to ...
IAU definition of planet
The definition of planet set in Prague in 2006 by the International Astronomical Union (IAU) states that, in the Solar System, a planet is a celestial body which: is in orbit around the Sun, has sufficient mass to assume hydrostatic equilibrium (a nearly round shape), and has ""cleared the neighborhood"" around its orbit.A non-satellite body fulfilling only the first two of these criteria is classified as a ""dwarf planet"". According to the IAU, ""planets and dwarf planets are two distinct classes of objects"". A non-satellite body fulfilling only the first criterion is termed a ""small Solar System body"" (SSSB). Initial drafts planned to include dwarf planets as a subcategory of planets, but because this could potentially have led to the addition of several dozens of planets into the Solar System, this draft was eventually dropped. The definition was a controversial one and has drawn both support and criticism from different astronomers, but has remained in use.According to this definition, there are eight planets in the Solar System. The definition distinguishes planets from smaller bodies and is not useful outside the Solar System, where smaller bodies cannot be found yet. Extrasolar planets, or exoplanets, are covered separately under a complementary 2003 draft guideline for the definition of planets, which distinguishes them from dwarf stars, which are larger.