Earth in Space Conceptest
... • Improved technology resulted in recent discoveries of several distant objects that were similar size or larger than Pluto • International Astronomical Union (IAU) could either 1. Consider the new objects as new planets OR 2. Classify the new objects – and Pluto – as a new group of objects ...
... • Improved technology resulted in recent discoveries of several distant objects that were similar size or larger than Pluto • International Astronomical Union (IAU) could either 1. Consider the new objects as new planets OR 2. Classify the new objects – and Pluto – as a new group of objects ...
A dust ring around Epsilon Eridani: analogue to the young Solar
... P-R drag, grains ∼ 1 mm in diameter would have been cleared only to radii of about 15 AU (Jura 1990), even if the star is as old as 1 Gyr. Thus it would be difficult to reproduce clearing out to the observed 35 AU. Also, P-R drag naturally produces a 1/r density distribution as small grains spiral i ...
... P-R drag, grains ∼ 1 mm in diameter would have been cleared only to radii of about 15 AU (Jura 1990), even if the star is as old as 1 Gyr. Thus it would be difficult to reproduce clearing out to the observed 35 AU. Also, P-R drag naturally produces a 1/r density distribution as small grains spiral i ...
The Habitability of Our Earth and Other Earths: Astrophysical
... Abstract For life-forms like us, the most important feature of Earth is its habitability. Understanding habitability and using that knowledge to locate the nearest habitable planet may be crucial for our survival as a species. During the past decade, expectations that the universe could be filled wit ...
... Abstract For life-forms like us, the most important feature of Earth is its habitability. Understanding habitability and using that knowledge to locate the nearest habitable planet may be crucial for our survival as a species. During the past decade, expectations that the universe could be filled wit ...
Solar system - Wikimedia Commons
... dust (the "solar nebula"), the various Hubble image of protoplanetary disks planets formed. They are believed to in the Orion Nebula, a light-years-wide "stellar nursery" likely very similar to have formed by accretion: the planets the primordial nebula from which our began as dust grains in orbit a ...
... dust (the "solar nebula"), the various Hubble image of protoplanetary disks planets formed. They are believed to in the Orion Nebula, a light-years-wide "stellar nursery" likely very similar to have formed by accretion: the planets the primordial nebula from which our began as dust grains in orbit a ...
A sound nebula: the origin of the Solar System in the field of a
... to give extra energy to the wave reflected from the central region. The reflected wave travelled all the way from the centre to the periphery of the spherical nebula, was reflected from the gravitational pause and then returned to the centre again, causing another explosion. This process, repeated s ...
... to give extra energy to the wave reflected from the central region. The reflected wave travelled all the way from the centre to the periphery of the spherical nebula, was reflected from the gravitational pause and then returned to the centre again, causing another explosion. This process, repeated s ...
Investigate Planets, Stars, Galaxies, and the Universe
... When we consider the distances between stars, things start to seem crazy. If our soccer ball-Sun were in New York City, its nearest neighbor would be another soccer ball 5,000 miles away — in Honolulu, Hawaii. The space between the two is mostly empty, except for a few clouds of gas. Movies sometime ...
... When we consider the distances between stars, things start to seem crazy. If our soccer ball-Sun were in New York City, its nearest neighbor would be another soccer ball 5,000 miles away — in Honolulu, Hawaii. The space between the two is mostly empty, except for a few clouds of gas. Movies sometime ...
Mar 2016 - Bays Mountain Park
... used. Early scientific instruments were fancy sticks, such as the astrolabe and armillary. The Best Man: America’s Pioneering Astrophysicist, J.E. Keeler Tom English, professor of astronomy at Guilford Technical Community College, gave an in-depth biography of American astrophysicist James Edward Ke ...
... used. Early scientific instruments were fancy sticks, such as the astrolabe and armillary. The Best Man: America’s Pioneering Astrophysicist, J.E. Keeler Tom English, professor of astronomy at Guilford Technical Community College, gave an in-depth biography of American astrophysicist James Edward Ke ...
Space Information Booklet (English)
... sun. Each day lasts 59 earth days and a year lasts 88 earth days. Mercury is a world of extremes. Because it is so close to the Sun, a visitor could easily cook to death. However because Mercury spins so slowly it gets very cold in the night time, which means a visitor could also freeze to death. Th ...
... sun. Each day lasts 59 earth days and a year lasts 88 earth days. Mercury is a world of extremes. Because it is so close to the Sun, a visitor could easily cook to death. However because Mercury spins so slowly it gets very cold in the night time, which means a visitor could also freeze to death. Th ...
Answering the Fermi Paradox - Acceleration Studies Foundation
... equation are likely quite large. Most would further argue that once you have one property (such as life), the next in the series becomes increasingly likely to emerge, in percentage terms, and thus if it can be determined that our galaxy provides plentiful planetary conditions for the long term exis ...
... equation are likely quite large. Most would further argue that once you have one property (such as life), the next in the series becomes increasingly likely to emerge, in percentage terms, and thus if it can be determined that our galaxy provides plentiful planetary conditions for the long term exis ...
Chapter 1 - Pearson Education
... Vatican put under house arrest in 1633 for his claims that Earth orbits the Sun. Although the Church soon recognized that Galileo was right, he was formally vindicated only with a statement by Pope John Paul II in 1992. In the meantime, his case spurred great debate in religious circles and had a pr ...
... Vatican put under house arrest in 1633 for his claims that Earth orbits the Sun. Although the Church soon recognized that Galileo was right, he was formally vindicated only with a statement by Pope John Paul II in 1992. In the meantime, his case spurred great debate in religious circles and had a pr ...
Chapter 6 - Soran University
... An atmosphere is the layer of gases that envelop a planet. On the Earth, it is this envelope that allows organisms to live. Atmospheric ozone protects us from ultraviolet radiation. CO2 and other gases trap heat and keep the surface warm enough for life to thrive. Oxygen has allowed life to evolve. ...
... An atmosphere is the layer of gases that envelop a planet. On the Earth, it is this envelope that allows organisms to live. Atmospheric ozone protects us from ultraviolet radiation. CO2 and other gases trap heat and keep the surface warm enough for life to thrive. Oxygen has allowed life to evolve. ...
Earth and Space Science (307)
... C. allowing the samples to sit open for a period of time to equilibrate with atmospheric conditions and then sealing them until they are tested D. mixing the samples together to minimize differences that may result from human error and from the variability of the samples Correct Response and Explana ...
... C. allowing the samples to sit open for a period of time to equilibrate with atmospheric conditions and then sealing them until they are tested D. mixing the samples together to minimize differences that may result from human error and from the variability of the samples Correct Response and Explana ...
Potential for Life on the Terrestrial Planets
... contributed to exoplanet, Solar System and stellar science essentially during the past decades to discuss the future of the fast-expanding field of exoplanet research. Now more than 860 exoplanets are known and during the near future observing facilities will become extremely powerful. After the pio ...
... contributed to exoplanet, Solar System and stellar science essentially during the past decades to discuss the future of the fast-expanding field of exoplanet research. Now more than 860 exoplanets are known and during the near future observing facilities will become extremely powerful. After the pio ...
Synthesis of Complex Organic Molecules
... combined to form hadrons (massive particles). The universe continued to expand and cool until electrons were stable. ...
... combined to form hadrons (massive particles). The universe continued to expand and cool until electrons were stable. ...
Larger, high-res file, best for printing
... the night sky. Look up and share the experidowntown, I found the city surprisingly dark. ence with others, especially those who may But some days in both cities, even our nearest be stargazing for the first time. That is what star was hidden from view — not because of the IYA is really all about. cl ...
... the night sky. Look up and share the experidowntown, I found the city surprisingly dark. ence with others, especially those who may But some days in both cities, even our nearest be stargazing for the first time. That is what star was hidden from view — not because of the IYA is really all about. cl ...
Seeding the Universe with Life
... example, self-contained humans living in space will need photosynthesis to create their own food internally. This can be achieved by implanting algae into human skin or by creating new photosynthetic human organs. Other plant genes can be also used by humans to provide waxy skin that prevents the lo ...
... example, self-contained humans living in space will need photosynthesis to create their own food internally. This can be achieved by implanting algae into human skin or by creating new photosynthetic human organs. Other plant genes can be also used by humans to provide waxy skin that prevents the lo ...
Asteroids and Comets and Meteors, Oh My!
... Piazzi tried to predict Ceres’ orbit. Astronomers need this information so they could try to find it. He observed Ceres for six weeks. He did not have enough information to determine Ceres’ orbit. After that, others searched for Ceres in vain. Several astronomers tried to work out Ceres’ orbit from ...
... Piazzi tried to predict Ceres’ orbit. Astronomers need this information so they could try to find it. He observed Ceres for six weeks. He did not have enough information to determine Ceres’ orbit. After that, others searched for Ceres in vain. Several astronomers tried to work out Ceres’ orbit from ...
Star Classification and its Connection to Exoplanets.
... already been collected, and now this data will be interpreted. Based on the data, a star’s spectral classification influences its capability to host planets. More specifically, through hypothesis testing, stars similar to the sun tend to host planets more often than other stars: a conclusion that is ...
... already been collected, and now this data will be interpreted. Based on the data, a star’s spectral classification influences its capability to host planets. More specifically, through hypothesis testing, stars similar to the sun tend to host planets more often than other stars: a conclusion that is ...
PSC100 Summary Chapters 1 to Chapter 9
... that are billions of light years away from us in space and which we will never be able to visit or experiment on first hand. When we study the universe outside of our Earth’s atmosphere, only two types of EM radiation make it through to the surface. Radio waves and visible light supply nearly all of ...
... that are billions of light years away from us in space and which we will never be able to visit or experiment on first hand. When we study the universe outside of our Earth’s atmosphere, only two types of EM radiation make it through to the surface. Radio waves and visible light supply nearly all of ...
Setting the Stage for Habitable Planets
... non-planetary body. Perhaps the term “habitable body” would be preferred, which could include such possibly habitable objects as dwarf planets and moons. However, the possibility of a habitable environment apart from the surface or near the surface of a rocky (terrestrial) planet remains highly spec ...
... non-planetary body. Perhaps the term “habitable body” would be preferred, which could include such possibly habitable objects as dwarf planets and moons. However, the possibility of a habitable environment apart from the surface or near the surface of a rocky (terrestrial) planet remains highly spec ...
Full Poster - Cool Cosmos
... Almost everything that we know about the Universe comes from studying the light that is emitted or reflected by objects in space. Apart from a few exceptions, such as the collection of moon rocks, astronomers must rely on collecting and analyzing the faint light from distant objects in order to stud ...
... Almost everything that we know about the Universe comes from studying the light that is emitted or reflected by objects in space. Apart from a few exceptions, such as the collection of moon rocks, astronomers must rely on collecting and analyzing the faint light from distant objects in order to stud ...
Asteroids, Comets & Meteors Teacher's Guide
... stars. They are not even pieces of stars. They are simply “rocks” that are burning due to friction as they fall through Earth’s upper atmosphere. 99.9% of all meteors seen are very small rocks no larger than single grains of sand or even specks of dust. The small particles are often the remains of d ...
... stars. They are not even pieces of stars. They are simply “rocks” that are burning due to friction as they fall through Earth’s upper atmosphere. 99.9% of all meteors seen are very small rocks no larger than single grains of sand or even specks of dust. The small particles are often the remains of d ...
NASA-TV Highlights
... What is the oldest thing you've ever seen? The Earth, Sun, Moon, and planets are 4.6 billion years old. The age record for people who occasionally glance at the sky might be Arcturus, about 7 billion years old. But with a pair of binoculars, you can pick up the 7.2-magnitude star HD 140283 in Libra, ...
... What is the oldest thing you've ever seen? The Earth, Sun, Moon, and planets are 4.6 billion years old. The age record for people who occasionally glance at the sky might be Arcturus, about 7 billion years old. But with a pair of binoculars, you can pick up the 7.2-magnitude star HD 140283 in Libra, ...
What causes the moon to change in appearance
... path of a celestial object or spacecraft around a star or planet—Earth, it appears as though the moon is changing its shape in the sky. This is because as the moon changes its position, the amount of sunlight reflected back to Earth also changes. The moon sometimes appears fully lit and sometimes co ...
... path of a celestial object or spacecraft around a star or planet—Earth, it appears as though the moon is changing its shape in the sky. This is because as the moon changes its position, the amount of sunlight reflected back to Earth also changes. The moon sometimes appears fully lit and sometimes co ...
Panspermia
Panspermia (from Greek πᾶν (pan), meaning ""all"", and σπέρμα (sperma), meaning ""seed"") is the hypothesis that life exists throughout the Universe, distributed by meteoroids, asteroids, comets, planetoids and, also, by spacecraft in the form of unintended contamination by microorganisms.Panspermia is a hypothesis proposing that microscopic life forms that can survive the effects of space, such as extremophiles, become trapped in debris that is ejected into space after collisions between planets and small Solar System bodies that harbor life. Some organisms may travel dormant for an extended amount of time before colliding randomly with other planets or intermingling with protoplanetary disks. If met with ideal conditions on a new planet's surfaces, the organisms become active and the process of evolution begins. Panspermia is not meant to address how life began, just the method that may cause its distribution in the Universe.Pseudo-panspermia (sometimes called ""soft panspermia"" or ""molecular panspermia"") argues that the pre-biotic organic building blocks of life originated in space and were incorporated in the solar nebula from which the planets condensed and were further —and continuously— distributed to planetary surfaces where life then emerged (abiogenesis). From the early 1970s it was becoming evident that interstellar dust consisted of a large component of organic molecules. Interstellar molecules are formed by chemical reactions within very sparse interstellar or circumstellar clouds of dust and gas. The dust plays a critical role of shielding the molecules from the ionizing effect of ultraviolet radiation emitted by stars.Several simulations in laboratories and in low Earth orbit suggest that ejection, entry and impact is survivable for some simple organisms.