`A ship flying in space:` Earth seen through the eyes of an astronaut
... These planets, named Kepler 20-e and Kepler 20-f, have sizes and masses similar to the Earth, and their host star is similar to our sun. But the resemblance ends there. Both orbit very rapidly — in 6.1 days and 19.6 days, respectively, compared to 365 days for an Earth year — so both are much closer ...
... These planets, named Kepler 20-e and Kepler 20-f, have sizes and masses similar to the Earth, and their host star is similar to our sun. But the resemblance ends there. Both orbit very rapidly — in 6.1 days and 19.6 days, respectively, compared to 365 days for an Earth year — so both are much closer ...
Space – Align the Stars - VUTechieTeacher
... Space – Align the Stars 1. The sun, together with all the planets, asteroids, comets, and meteors that orbit around it, collectively make up our _____________. ...
... Space – Align the Stars 1. The sun, together with all the planets, asteroids, comets, and meteors that orbit around it, collectively make up our _____________. ...
Lecture4
... relative to the stars, moving slowly westward relative to the stars, for a few days ...
... relative to the stars, moving slowly westward relative to the stars, for a few days ...
The Origin of the Solar System and Other Planetary Systems
... The Role of Catastrophes Condensation-accretion theory explains the 10 properties of the solar system mentioned at the beginning. However, there are special cases not explained by the theory. 1. Mercury’s large metallic core may be the result of a collision between two planetesimals, where much of ...
... The Role of Catastrophes Condensation-accretion theory explains the 10 properties of the solar system mentioned at the beginning. However, there are special cases not explained by the theory. 1. Mercury’s large metallic core may be the result of a collision between two planetesimals, where much of ...
astronomy ch 2 edit 1 - Fort Thomas Independent Schools
... Early models of the universe attempted to explain the motion of the five visible planets against the background of “fixed” stars. The main problem was that the planets do not move uniformly against the background of stars, but instead appear to stop, move backward, then move forward again. This bac ...
... Early models of the universe attempted to explain the motion of the five visible planets against the background of “fixed” stars. The main problem was that the planets do not move uniformly against the background of stars, but instead appear to stop, move backward, then move forward again. This bac ...
Mission 1 Glossary
... (1,000,000,000,000) If you have a bucket that holds 100 thousand marbles, you would need 10 million of those same buckets to hold a trillion marbles! That's a lot of marbles! ...
... (1,000,000,000,000) If you have a bucket that holds 100 thousand marbles, you would need 10 million of those same buckets to hold a trillion marbles! That's a lot of marbles! ...
AST 301—Review for Exam 3 Consult “Guide to Reading and Study
... that there are several techniques that could be used to detect extrasolar planets, but that basically only one has been so far successful (with a few recent detections using another technique). Can you explain why that is? (We also went over this in class.) Of the numerous extrasolar planets that ha ...
... that there are several techniques that could be used to detect extrasolar planets, but that basically only one has been so far successful (with a few recent detections using another technique). Can you explain why that is? (We also went over this in class.) Of the numerous extrasolar planets that ha ...
The solar system - LemoineHPCScience
... Jupiter has a mass that is 2 ½ times greater than the mass of all the other planets and moons combined, yet the sun is 800 times larger than Jupiter. Structure of Jupiter: Jupiter’s hydrogen-helium atmosphere also contains small amounts of methane, ammonia, water, and sulfur compounds. The wind syst ...
... Jupiter has a mass that is 2 ½ times greater than the mass of all the other planets and moons combined, yet the sun is 800 times larger than Jupiter. Structure of Jupiter: Jupiter’s hydrogen-helium atmosphere also contains small amounts of methane, ammonia, water, and sulfur compounds. The wind syst ...
What theory best explains the features of our
... • extreme axis tilt — nearly tipped on its “side” — makes extreme seasons during its 84-year orbit. • moons also tipped in their orbits… ...
... • extreme axis tilt — nearly tipped on its “side” — makes extreme seasons during its 84-year orbit. • moons also tipped in their orbits… ...
(the largest solar system planet) represents at
... (Mercury, Venus, Earth, Mars), four outer planets (Jupiter, Saturn, Uranus, Neptune), approximately three “dwarf planets,” more than 130 satellites (orbiting moons), an asteroid belt, and entering comets. As one ventures into space, the distances from one planet to another are vast. In fact, the sol ...
... (Mercury, Venus, Earth, Mars), four outer planets (Jupiter, Saturn, Uranus, Neptune), approximately three “dwarf planets,” more than 130 satellites (orbiting moons), an asteroid belt, and entering comets. As one ventures into space, the distances from one planet to another are vast. In fact, the sol ...
2012年雅思阅读考试考前冲刺试题（1）
... 10.答案：understanding (第11段第3句：This data will provide a major boost to our understanding of how stars form and evolve.) 11.答案：orbiting (第12段第1句：Since the discovery in 1995 of the first "exoplanet" - a planet orbiting a star other than the Sun - more than 200 others have been found by ground-based obse ...
... 10.答案：understanding (第11段第3句：This data will provide a major boost to our understanding of how stars form and evolve.) 11.答案：orbiting (第12段第1句：Since the discovery in 1995 of the first "exoplanet" - a planet orbiting a star other than the Sun - more than 200 others have been found by ground-based obse ...
No Slide Title
... A brief history of extra-solar planets • In the 16th century the Italian philosopher Giordano Bruno said that the fixed stars are really suns like our own, with planets going round them • 1991 Radio astronomers Alex Wolszczan & Dale Frail discovered planets around a pulsar PSR1257+12 – Variations i ...
... A brief history of extra-solar planets • In the 16th century the Italian philosopher Giordano Bruno said that the fixed stars are really suns like our own, with planets going round them • 1991 Radio astronomers Alex Wolszczan & Dale Frail discovered planets around a pulsar PSR1257+12 – Variations i ...
Beyond Pluto
... colors, and sizes, many with their own moons, some in peculiar orbits that have been pushed by Neptune or pulled by passing stars. Stranger objects are likely to be found. Astronomers are only on the edge of discovering this vast new world. In the 1940s and 1950s, astronomers Kenneth Edgeworth and G ...
... colors, and sizes, many with their own moons, some in peculiar orbits that have been pushed by Neptune or pulled by passing stars. Stranger objects are likely to be found. Astronomers are only on the edge of discovering this vast new world. In the 1940s and 1950s, astronomers Kenneth Edgeworth and G ...
The Sun There are billions of stars that fill up our skies every night
... How does the Sun produce all this heat and light energy? The Sun is like a huge nuclear reactor. The incredibly high temperatures at the Sun’s core cause millions of tons of hydrogen nuclei to fuse and produce helium nuclei. This continuous process, called nuclear fusion produces vast amounts of hea ...
... How does the Sun produce all this heat and light energy? The Sun is like a huge nuclear reactor. The incredibly high temperatures at the Sun’s core cause millions of tons of hydrogen nuclei to fuse and produce helium nuclei. This continuous process, called nuclear fusion produces vast amounts of hea ...
docx - STAO
... Students should know the order of the planets before starting this activity. If necessary, teach them a mnemonic, such as My Velvet Elephant Munches... In this activity the Sun is placed at one end of the field and the planets are arranged linearly. Discuss with students that this is not an accurate ...
... Students should know the order of the planets before starting this activity. If necessary, teach them a mnemonic, such as My Velvet Elephant Munches... In this activity the Sun is placed at one end of the field and the planets are arranged linearly. Discuss with students that this is not an accurate ...
previous mid-term () - Department of Physics and Astronomy
... d. none of the above. 23. Copernicus is famous for leading a revolution in human thought about the universe; the title of his famous work was the a. Almagest. b. Sidereal Messenger. c. Mystery of the Universe. d. Principia. e. The Revolution of the Heavenly Orbs. 24. Galileo was the first person to ...
... d. none of the above. 23. Copernicus is famous for leading a revolution in human thought about the universe; the title of his famous work was the a. Almagest. b. Sidereal Messenger. c. Mystery of the Universe. d. Principia. e. The Revolution of the Heavenly Orbs. 24. Galileo was the first person to ...
Solar System`s Age - Empyrean Quest Publishers
... Formation of Planets • Condensation temperature determines whether a certain substance is a solid or a gas. – Above the condensation temperature, gas state – Below the condensation temperature, solid sate • Hydrogen and Helium: always in gas state, because concentration temperatures close to absolu ...
... Formation of Planets • Condensation temperature determines whether a certain substance is a solid or a gas. – Above the condensation temperature, gas state – Below the condensation temperature, solid sate • Hydrogen and Helium: always in gas state, because concentration temperatures close to absolu ...
Exoplanets and Tides
... The oceans are not uniformly spread over the globe. There are continents sticking up, deep and shallow parts, etc. This complicates things, but tides can be reliably predicted. The Sun also raises tides. But it is at a much greater distance (400x as far away), so its tides are less important than th ...
... The oceans are not uniformly spread over the globe. There are continents sticking up, deep and shallow parts, etc. This complicates things, but tides can be reliably predicted. The Sun also raises tides. But it is at a much greater distance (400x as far away), so its tides are less important than th ...
astronomy history time machine
... Early models of the universe attempted to explain the motion of the five visible planets against the background of “fixed” stars. The main problem was that the planets do not move uniformly against the background of stars, but instead appear to stop, move backward, then move forward again. This bac ...
... Early models of the universe attempted to explain the motion of the five visible planets against the background of “fixed” stars. The main problem was that the planets do not move uniformly against the background of stars, but instead appear to stop, move backward, then move forward again. This bac ...
Definition of planet
The definition of planet, since the word was coined by the ancient Greeks, has included within its scope a wide range of celestial bodies. Greek astronomers employed the term asteres planetai (ἀστέρες πλανῆται), ""wandering stars"", for star-like objects which apparently moved over the sky. Over the millennia, the term has included a variety of different objects, from the Sun and the Moon to satellites and asteroids.By the end of the 19th century the word planet, though it had yet to be defined, had become a working term applied only to a small set of objects in the Solar System. After 1992, however, astronomers began to discover many additional objects beyond the orbit of Neptune, as well as hundreds of objects orbiting other stars. These discoveries not only increased the number of potential planets, but also expanded their variety and peculiarity. Some were nearly large enough to be stars, while others were smaller than Earth's moon. These discoveries challenged long-perceived notions of what a planet could be.The issue of a clear definition for planet came to a head in 2005 with the discovery of the trans-Neptunian object Eris, a body more massive than the smallest then-accepted planet, Pluto. In its 2006 response, the International Astronomical Union (IAU), recognised by astronomers as the world body responsible for resolving issues of nomenclature, released its decision on the matter. This definition, which applies only to the Solar System, states that a planet is a body that orbits the Sun, is massive enough for its own gravity to make it round, and has ""cleared its neighbourhood"" of smaller objects around its orbit. Under this new definition, Pluto and the other trans-Neptunian objects do not qualify as planets. The IAU's decision has not resolved all controversies, and while many scientists have accepted the definition, some in the astronomical community have rejected it outright.