ptolemy day 21 - Arts of Liberty
... Jupiter, Saturn, can be any angular distance from the sun. This is the big distinction between inner and outer planets. (The cause of this, in truth, is clear. Our own orbit encompasses those of Venus and Mercury, while it is encompassed by those of Mars, Jupiter, and Saturn. This is another sneak p ...
... Jupiter, Saturn, can be any angular distance from the sun. This is the big distinction between inner and outer planets. (The cause of this, in truth, is clear. Our own orbit encompasses those of Venus and Mercury, while it is encompassed by those of Mars, Jupiter, and Saturn. This is another sneak p ...
Measuring Distances Beyond the Solar System
... The Sun, our nearest star, appears as a large, bright disc in the sky because it is relatively close to Earth—approximately 150 million (1.5 × 108) km away. The next nearest star to the Sun is Proxima Centauri, which appears as a twinkling dot of light. Proxima Centauri is approximately 40 trillion ...
... The Sun, our nearest star, appears as a large, bright disc in the sky because it is relatively close to Earth—approximately 150 million (1.5 × 108) km away. The next nearest star to the Sun is Proxima Centauri, which appears as a twinkling dot of light. Proxima Centauri is approximately 40 trillion ...
Unit 6: Astronomy
... closest to the sun, and slow down as planets move away from the sun. Kepler published a third law, called the harmonic law, in 1619. The third law shows how a planet’s distance from the sun is related to the amount of time it takes to revolve around the sun. His work influenced Isaac Newton’s later ...
... closest to the sun, and slow down as planets move away from the sun. Kepler published a third law, called the harmonic law, in 1619. The third law shows how a planet’s distance from the sun is related to the amount of time it takes to revolve around the sun. His work influenced Isaac Newton’s later ...
Sponge: What two factors cause the seasons on Earth?
... coincidence that the Sun and Moon occupy the same size on the celestial sphere, 1/2 of one degree. If this were not so, we would not see these eclipses. ...
... coincidence that the Sun and Moon occupy the same size on the celestial sphere, 1/2 of one degree. If this were not so, we would not see these eclipses. ...
Lecture 1a: Class overview and Early Observations 8/27
... 365.242 days in year- not on tests • If normal year has 365 days need extra 24 days/century and extra 2 days/millennium • 46 BC Julius Caesar (really Sogigula an Egyptian) - Julian calendar with leap day every 4 years. But 8 too many days every 1000 years so…. • Gregorian calendar adopted Spain ...
... 365.242 days in year- not on tests • If normal year has 365 days need extra 24 days/century and extra 2 days/millennium • 46 BC Julius Caesar (really Sogigula an Egyptian) - Julian calendar with leap day every 4 years. But 8 too many days every 1000 years so…. • Gregorian calendar adopted Spain ...
History of Astronomy
... How Copernicus calculated the distance to the planets. (A) When an inner planet appears in the sky at its farthest point from the Sun, the planet's angle on the sky away from the Sun, A, can be measured. You can see from the figure that at the same time angle B is 90°. The planet's distance from th ...
... How Copernicus calculated the distance to the planets. (A) When an inner planet appears in the sky at its farthest point from the Sun, the planet's angle on the sky away from the Sun, A, can be measured. You can see from the figure that at the same time angle B is 90°. The planet's distance from th ...
Chapter 26
... its outward pressure is overcome by gravity. • Its core contracts and increases in temperature. • The outer layers expand and cool. • In this late stage of its life cycle, an average star like our Sun is called a giant. ...
... its outward pressure is overcome by gravity. • Its core contracts and increases in temperature. • The outer layers expand and cool. • In this late stage of its life cycle, an average star like our Sun is called a giant. ...
Mass extinctions and supernova explosions
... Strahlungsapparat “(Wulfscher Strahlungsapparat 2015)” during several balloon rides for the measurements, he found that background radioactivity increases with rising altitude. In 1936 he received the Nobel prize for his discovery. It took 22 years until work by W.Baade and F. Zwicky “(W.Baade and F ...
... Strahlungsapparat “(Wulfscher Strahlungsapparat 2015)” during several balloon rides for the measurements, he found that background radioactivity increases with rising altitude. In 1936 he received the Nobel prize for his discovery. It took 22 years until work by W.Baade and F. Zwicky “(W.Baade and F ...
Seasons Challenge
... Summer Solstice: time of year at the end of spring when there is the most amount of daylight and least amount of darkness in a day; the solstice which takes place on June 21st-22nd that marks the beginning or summer in the Northern Hemisphere. Tangential Force: a force which acts on a moving body in ...
... Summer Solstice: time of year at the end of spring when there is the most amount of daylight and least amount of darkness in a day; the solstice which takes place on June 21st-22nd that marks the beginning or summer in the Northern Hemisphere. Tangential Force: a force which acts on a moving body in ...
Chapter 10 - Astronomy
... 1. Astronomers originally thought that asteroids were the remains of the explosion of a planet. However, there is no known mechanism for making a planet explode. ...
... 1. Astronomers originally thought that asteroids were the remains of the explosion of a planet. However, there is no known mechanism for making a planet explode. ...
B - Department of Physics and Astronomy
... C. secondary pulses of radiation occasionally interspersed with the primary pulses D. *sudden increases in rotation rate 17. In some binary star systems, such as Algol, the less massive star is a red giant and the more massive star is on the main sequence. This is evidence that A. *mass transfer has ...
... C. secondary pulses of radiation occasionally interspersed with the primary pulses D. *sudden increases in rotation rate 17. In some binary star systems, such as Algol, the less massive star is a red giant and the more massive star is on the main sequence. This is evidence that A. *mass transfer has ...
E1 Introduction to the universe
... evidence that lots of ordinary matter does exist in these groupings. These can be thought of as low-mass failed stars or high-mass planets. They could even be black holes. These would produce little or no light. some fundamental particles (neutrinos) are known to exist in huge numbers. It is not kno ...
... evidence that lots of ordinary matter does exist in these groupings. These can be thought of as low-mass failed stars or high-mass planets. They could even be black holes. These would produce little or no light. some fundamental particles (neutrinos) are known to exist in huge numbers. It is not kno ...
Hot-plate model of stars Test 2 & grades • Public viewing sessions
... surface temperature (1905) & discovered a surprise. Sirius A is slightly larger than the sun. Sirius B is 100 1 times smaller. The same size as the Earth! Stars come in 3 sizes. ...
... surface temperature (1905) & discovered a surprise. Sirius A is slightly larger than the sun. Sirius B is 100 1 times smaller. The same size as the Earth! Stars come in 3 sizes. ...
Extension worksheet – Topic 6 - Cambridge Resources for the IB
... Mark scheme for Extension Worksheet – Option E, Worksheet 1 ...
... Mark scheme for Extension Worksheet – Option E, Worksheet 1 ...
10438 starlight - The Described and Captioned Media Program
... with size? Distance? How do stars form? How do they die? Tell students that the program they are about to watch considers the many different things that scientists know about stars and how they gained this knowledge. As students watch, have them answer the questions on the "Starlight" worksheet, so ...
... with size? Distance? How do stars form? How do they die? Tell students that the program they are about to watch considers the many different things that scientists know about stars and how they gained this knowledge. As students watch, have them answer the questions on the "Starlight" worksheet, so ...
the particle was on Earth`s surface
... 10 billion light years away ! What force binds together these progressively larger structures, from star to galaxy to supercluster ? It is the gravitational force that not only holds you on Earth but also reaches out across ...
... 10 billion light years away ! What force binds together these progressively larger structures, from star to galaxy to supercluster ? It is the gravitational force that not only holds you on Earth but also reaches out across ...
The loss of nitrogen-rich atmospheres from Earth-like
... gaseous envelope even if the planet orbits its parent M star within the habitable zone (HZ). However, as shown in Lammer et al. (2007), a high CO2 atmospheric mixing ratio will result in enhanced IR cooling in the thermosphere and inhibits its expansion and therefore leads to reduced non-thermal atm ...
... gaseous envelope even if the planet orbits its parent M star within the habitable zone (HZ). However, as shown in Lammer et al. (2007), a high CO2 atmospheric mixing ratio will result in enhanced IR cooling in the thermosphere and inhibits its expansion and therefore leads to reduced non-thermal atm ...
pierrehumbert_lecture_1
... • Very shortwave ultraviolet (EUV) and X-rays are absorbed high up in the atmosphere, and heat it to the point where the atmosphere can escape to space. • i.e. it’s the rocket fuel that brings molecules up to escape velocity and can launch atmosphere out of the gravity well. • Shorter wave ultraviol ...
... • Very shortwave ultraviolet (EUV) and X-rays are absorbed high up in the atmosphere, and heat it to the point where the atmosphere can escape to space. • i.e. it’s the rocket fuel that brings molecules up to escape velocity and can launch atmosphere out of the gravity well. • Shorter wave ultraviol ...
newsletter - Thanet Astronomy Group
... 1919. It's task is to :- “Promote and safeguard the science of astronomy in all its aspects through international cooperation.” Resolution B5 (Definition of a Planet in the Solar System) States :A "dwarf planet" is a celestial body that (a) Is in orbit around the Sun. (b) Has sufficient mass for its ...
... 1919. It's task is to :- “Promote and safeguard the science of astronomy in all its aspects through international cooperation.” Resolution B5 (Definition of a Planet in the Solar System) States :A "dwarf planet" is a celestial body that (a) Is in orbit around the Sun. (b) Has sufficient mass for its ...
Rare Earth hypothesis
In planetary astronomy and astrobiology, the Rare Earth Hypothesis argues that the origin of life and the evolution of biological complexity such as sexually reproducing, multicellular organisms on Earth (and, subsequently, human intelligence) required an improbable combination of astrophysical and geological events and circumstances. The hypothesis argues that complex extraterrestrial life is a very improbable phenomenon and likely to be extremely rare. The term ""Rare Earth"" originates from Rare Earth: Why Complex Life Is Uncommon in the Universe (2000), a book by Peter Ward, a geologist and paleontologist, and Donald E. Brownlee, an astronomer and astrobiologist, both faculty members at the University of Washington.An alternative view point was argued by Carl Sagan and Frank Drake, among others. It holds that Earth is a typical rocky planet in a typical planetary system, located in a non-exceptional region of a common barred-spiral galaxy. Given the principle of mediocrity (also called the Copernican principle), it is probable that the universe teems with complex life. Ward and Brownlee argue to the contrary: that planets, planetary systems, and galactic regions that are as friendly to complex life as are the Earth, the Solar System, and our region of the Milky Way are very rare.