Unit I – The Seasons
... remote stars in all directions. But the Earth is actually very close to one star: the Sun. (The next nearest star is about 400,000 times farther away!) ...
... remote stars in all directions. But the Earth is actually very close to one star: the Sun. (The next nearest star is about 400,000 times farther away!) ...
Lecture notes 4: The Sun as a Star i
... even in the optical region (between 400 nm and 700 nm) and there are spectral absorbtion lines. This is mainly due to the fact that the Sun is not in TE! In fact Teff = 5800 K is only typical of a small part of the solar atmosphere, the photosphere. This is not surprising since energy is flowing out o ...
... even in the optical region (between 400 nm and 700 nm) and there are spectral absorbtion lines. This is mainly due to the fact that the Sun is not in TE! In fact Teff = 5800 K is only typical of a small part of the solar atmosphere, the photosphere. This is not surprising since energy is flowing out o ...
HR DIAGRAM ACTIVITY
... 12. If you know a star’s color, you can determine its _________________ 13. (circle one) HOT or COLD stars have a shorter life span. 14. In the MAIN SEQUENCE, what color are the most massive stars? __________ In the MAIN SEQUENCE, what color are the least massive stars? __________ 15. You have disco ...
... 12. If you know a star’s color, you can determine its _________________ 13. (circle one) HOT or COLD stars have a shorter life span. 14. In the MAIN SEQUENCE, what color are the most massive stars? __________ In the MAIN SEQUENCE, what color are the least massive stars? __________ 15. You have disco ...
Lecture 23 Slides
... • How do we know the initial composition of a rock? • Argon-40 does not combine with other elements into solids and does not condense in the protosolar nebula • If we see 40Ar “trapped” inside a rock, we know that it started out as 40K and decayed into 40Ar. This is why this only works for solids - ...
... • How do we know the initial composition of a rock? • Argon-40 does not combine with other elements into solids and does not condense in the protosolar nebula • If we see 40Ar “trapped” inside a rock, we know that it started out as 40K and decayed into 40Ar. This is why this only works for solids - ...
Rotation - Cloudfront.net
... body on its axis Revolution – the motion of a body, such as a planet or moon, along a path around some point in space Precession – the slight movement, over a period of 26,000 years, of Earth’s axis ...
... body on its axis Revolution – the motion of a body, such as a planet or moon, along a path around some point in space Precession – the slight movement, over a period of 26,000 years, of Earth’s axis ...
Lecture120202 - FSU High Energy Physics
... why did the Universe begin expanding? what happened during the very early Universe? why only matter, no antimatter? exactly why is the expansion accelerating? ...
... why did the Universe begin expanding? what happened during the very early Universe? why only matter, no antimatter? exactly why is the expansion accelerating? ...
NOVAE and SUPERNOVAE
... Throughout history “new stars" have suddenly appeared in the night sky, then faded away. These objects were termed novae. Today, astronomers have determined that these new stars are actually stellar explosions. Nova explosions occur on the surface of white dwarfs, while supernova involve the ...
... Throughout history “new stars" have suddenly appeared in the night sky, then faded away. These objects were termed novae. Today, astronomers have determined that these new stars are actually stellar explosions. Nova explosions occur on the surface of white dwarfs, while supernova involve the ...
Second Lecture - University of Maryland Astronomy
... • Made planetary observations much more accurate than any previous… first to estimate error bar of a measurement • Observed “new star” (Tycho’s supernova; 1572) • Demonstrated that comet was beyond Moon’s orbit • From parallax observations of "new star", comet: • knew they were not in Earth’s atmosp ...
... • Made planetary observations much more accurate than any previous… first to estimate error bar of a measurement • Observed “new star” (Tycho’s supernova; 1572) • Demonstrated that comet was beyond Moon’s orbit • From parallax observations of "new star", comet: • knew they were not in Earth’s atmosp ...
Advances in Environmental Biology Approach Mahin Shahrivar and
... starts expanding like a gigantic monster getting larger in the sky. After short period of time the very intense solar winds will blow forming external layers as a cloudy shape; the external layer of the sun will surround the Venus, earth and Mercury and it will even swallow the Mars. Then the sun wi ...
... starts expanding like a gigantic monster getting larger in the sky. After short period of time the very intense solar winds will blow forming external layers as a cloudy shape; the external layer of the sun will surround the Venus, earth and Mercury and it will even swallow the Mars. Then the sun wi ...
Training Guide
... DAY 1: What does a scientist do? What do scientists use tools for? What is the major source of energy for Earth? What evidence would we find on Earth that the Sun gives us energy and that we depend on this energy? What are the characteristics of the sun? How does gravity relate to mass? a. HOUR 1: E ...
... DAY 1: What does a scientist do? What do scientists use tools for? What is the major source of energy for Earth? What evidence would we find on Earth that the Sun gives us energy and that we depend on this energy? What are the characteristics of the sun? How does gravity relate to mass? a. HOUR 1: E ...
Star Types
... sun, an O star, a white dwarf, or a red giant? Which of these star is the hottest? What are Sun-like stars (0.4 Msun < M < 8 Msun) in common? What about red dwarfs (0.08 Msun < M < 0.4 Msun) ? Where do stars spend most of their time? ...
... sun, an O star, a white dwarf, or a red giant? Which of these star is the hottest? What are Sun-like stars (0.4 Msun < M < 8 Msun) in common? What about red dwarfs (0.08 Msun < M < 0.4 Msun) ? Where do stars spend most of their time? ...
AST111, Lecture 1b
... to an object has been estimated from its orbit. Remember that Kepler’s third law relates the orbit period to it semi-major axis. However, angular resolution from most earth ground based observations is limited by atmospheric seeing. (~1”) • Radar echoes. Intensity drops as 1/r4 so only nearby object ...
... to an object has been estimated from its orbit. Remember that Kepler’s third law relates the orbit period to it semi-major axis. However, angular resolution from most earth ground based observations is limited by atmospheric seeing. (~1”) • Radar echoes. Intensity drops as 1/r4 so only nearby object ...
What is a star? A star is a giant ball of gases held together by gravity
... Stars come in a variety of sizes and colors. A few stars are dwarf stars that are smaller than Earth. Other stars are supergiants that are hundreds of times larger than our sun. Our sun is a medium-sized star with a diameter of about 1,400,000 km. or 865,000 miles. It would take over one hundred Ear ...
... Stars come in a variety of sizes and colors. A few stars are dwarf stars that are smaller than Earth. Other stars are supergiants that are hundreds of times larger than our sun. Our sun is a medium-sized star with a diameter of about 1,400,000 km. or 865,000 miles. It would take over one hundred Ear ...
Mar 2017 - What`s Out Tonight?
... longer in its group. west after sunset or in the east before sunrise. Jupiter can be out Globular Clusters look like fuzzy balls because they contain all night and always outshines any star. Everyone enjoys its 4 tens of thousands stars held together by their mutual gravity. All Galilean moons and c ...
... longer in its group. west after sunset or in the east before sunrise. Jupiter can be out Globular Clusters look like fuzzy balls because they contain all night and always outshines any star. Everyone enjoys its 4 tens of thousands stars held together by their mutual gravity. All Galilean moons and c ...
LT 9: I can describe how a protostar becomes a star.
... Giants: highly luminous, large stars Dwarfs: small, dim stars – White dwarfs: very faint, very dense, very ...
... Giants: highly luminous, large stars Dwarfs: small, dim stars – White dwarfs: very faint, very dense, very ...
constellation wars
... • Primitive calendars predicting/planning harvest and planting seasons. Ancient cultures knew when certain stars appeared on the horizon before daybreak, it would be the beginning of spring ...
... • Primitive calendars predicting/planning harvest and planting seasons. Ancient cultures knew when certain stars appeared on the horizon before daybreak, it would be the beginning of spring ...
study-notes-for-2016-2017-1st-qtr-exam
... and are considered “gas giants” because of their size and their primary make up of gases. Planets are big enough to other some smaller objects to revolve around them (moons) and to clear other larger objects from near their orbit. The Earth is the only planet/space object in our solar system known t ...
... and are considered “gas giants” because of their size and their primary make up of gases. Planets are big enough to other some smaller objects to revolve around them (moons) and to clear other larger objects from near their orbit. The Earth is the only planet/space object in our solar system known t ...
parallax in arc seconds
... Proxima Centauri. It is a member of a triple star system called the Alpha Centauri System. Proxima Centauri has the largest known stellar parallax at 0.76”. ...
... Proxima Centauri. It is a member of a triple star system called the Alpha Centauri System. Proxima Centauri has the largest known stellar parallax at 0.76”. ...
life
... •We are first in the galaxy, and possibly the visible universe •Ultimately, this is an experimental question ...
... •We are first in the galaxy, and possibly the visible universe •Ultimately, this is an experimental question ...
Dawn Spacecraft Will Go Asteroid
... The asteroid belt lies between the orbits of Mars and Jupiter, straddling the inner and outer solar system. The inner solar system orbits (enlarged, at top) are, in order from the Sun: Mercury, Venus, Earth, and Mars. Jupiter is part of the outer solar system. The outer solar system orbits are, in o ...
... The asteroid belt lies between the orbits of Mars and Jupiter, straddling the inner and outer solar system. The inner solar system orbits (enlarged, at top) are, in order from the Sun: Mercury, Venus, Earth, and Mars. Jupiter is part of the outer solar system. The outer solar system orbits are, in o ...
Slide 1
... the 180 degrees in Summer or Winter to keep earth in the same season. • Then the planets must shift their orbit around the sun. • Thus it may appear the sun and moon shifted in respect to the pole star. ...
... the 180 degrees in Summer or Winter to keep earth in the same season. • Then the planets must shift their orbit around the sun. • Thus it may appear the sun and moon shifted in respect to the pole star. ...
Lunar eclipses
... eclipse. Instead it can be seen as a very dark red color because of the refraction of sunlight through the Earth's atmosphere. ...
... eclipse. Instead it can be seen as a very dark red color because of the refraction of sunlight through the Earth's atmosphere. ...
Universe and Solar System
... Why don't you float off in space when you are on the Earth? Why do planets never leave the solar system or fall into the Sun? Can we see our own galaxy in the night sky? Explain. KNOWLEDGE: Scientific theories change when scientists discover new information. Prior to the 1500's it was believed that ...
... Why don't you float off in space when you are on the Earth? Why do planets never leave the solar system or fall into the Sun? Can we see our own galaxy in the night sky? Explain. KNOWLEDGE: Scientific theories change when scientists discover new information. Prior to the 1500's it was believed that ...