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Your guide to see five planets after sunset
Your guide to see five planets after sunset

... look to the skies to collect the full set of visible the Solar System interactive by NOVA. planets. It's only ever possible to see the five planets This article was originally published on The together either just before dawn or just after sunset. Conversation. Read the original article. Mars, Jupit ...
Formation of the Solar System (Chapter 8)
Formation of the Solar System (Chapter 8)

... stars • This strong wind eventually swept the remains of the solar nebula, hydrogen and helium gas, out of the solar system – Nebula gas leaves before inner solar system cools enough for ices to condense – Nebula gas leaves outer solar system before Jupiter can capture all of it What if solar wind b ...
Powerpoint
Powerpoint

... stars • This strong wind eventually swept the remains of the solar nebula, hydrogen and helium gas, out of the solar system – Nebula gas leaves before inner solar system cools enough for ices to condense – Nebula gas leaves outer solar system before Jupiter can capture all of it What if solar wind b ...
Planets Beyond the Solar System
Planets Beyond the Solar System

... Doppler shift surveys • Current surveys are monitoring ~ 2000 nearby stars. • Results to date show that about 6% of Sun-like stars surveyed have Jupiter-like planets closer than 5 AU. • These surveys cannot detect Earth-like planets; Saturns (at Saturn’s distance from the star) are ...
Nebulas - WLWV Staff Blogs
Nebulas - WLWV Staff Blogs

... Reflection nebulae shine with a blue light, which is reflected from stars around it. They are blue because, they scatter the blue light from nearby stars while the rest of the colors are allowed to pass through the cloud. ...
Collapse: Method 2
Collapse: Method 2

... Small, dense, iron and silicate rich planets in the inner 2 AU. Slow rotors, few or no moons, no rings, differentiated (molten interiors) Large, low density, gaseous planets rich in H, He and volatile elements at >= 5 AU Rapid rotors, many moons, all have ring systems ...
August 2014 - Hermanus Astronomy
August 2014 - Hermanus Astronomy

... one of the largest known planet embryos. It came into existence at the same time as the solar system. Spurring scientific interest, NASA sent the Dawn spacecraft on Vesta’s orbit for one year between July 2011 and July 2012. A team of researchers from EPFL as well as the University of Bern in Britta ...
SS_L4
SS_L4

... Initial contraction of a massive cloud proceeds providing it is not opposed by increasing P. Releasing Egrav increases T (and hence P), but puts H2 molecules into excited rotational levels. De-excitation emits a photon at 28.2m. Cloud is transparent at 28.2m, so radiation cools cloud, allowing con ...
Lecture 43
Lecture 43

... The Kuiper Belt, which lies between 30 to 50 AU from the Sun, is a great ring of debris, similar to the asteroid belt but of much lower density material – presumably dominated by hydrocarbons and ices of H2O, CH4, and NH3 with lesser amounts of silicates. This region is thought to be the place of or ...
Lecture 34: Habitable Zones around Stars
Lecture 34: Habitable Zones around Stars

... Region around the Sun where liquid water is stable on the surface of a planet at a pressure of 1 atmosphere. ...
p - INAF-OAT Trieste Users site
p - INAF-OAT Trieste Users site

... –  The heat would be produced by tidal interactions with Jupiter; the strong effects of vulcanism found in the first moon of Jupiter (Io), indicate that also on Europe tidal ...
Small Bodies in the Solar System
Small Bodies in the Solar System

... • They range in size from a few meters to more than 900 km in diameter - too small to be a planet. • Most asteroids are located in the asteroid belt, between Mars & Jupiter. • Some asteroids that orbit planets are considered moons. • Some astronomers consider asteroids to be minor planets. ...
Chapter 9
Chapter 9

... What type of galaxy is shown below? ...
Chapter 9
Chapter 9

... What type of galaxy is shown below? ...
In the beginning… Astronomical Observations of Star Formation
In the beginning… Astronomical Observations of Star Formation

... rich in volatiles (C and N) compared to the Earth. ...
Terrestrial Planets
Terrestrial Planets

... material into dust grains distributed in a so-called debris disk. Because the grains have larger surface area per unit mass compared to larger bodies, they (re)radiate more energy and therefore are more easily detected in the infrared compared to their parent bodies. By studying this signal, we can ...
Asteroids, Comets and Meteorites What is an Asteroid? Asteroids
Asteroids, Comets and Meteorites What is an Asteroid? Asteroids

... find at different distances from the Sun were complex, resulting from both collapse and ejection from the protosun ...
Habitability of the Goldilocks planet Gliese 581g: results from
Habitability of the Goldilocks planet Gliese 581g: results from

... for Gl 581g our model previously developed for the Earth, using scaling laws if appropriate. This approach has already been applied to Gl 581c and Gl 581d (von Bloh et al. 2007), as well as to simulations of hypothetical super-Earth planets in systems undergoing red giant branch evolution (von Bloh ...
Star Formation: Interstellar Gas and Dust
Star Formation: Interstellar Gas and Dust

... What types of planets are out there? • Current search methods Î easiest to detect giant planets close to parent star. • But…why do giant planets exist at less than 1 AU? – spiraling into the star, as a result of friction. ...
all Solar System objects have the same composition
all Solar System objects have the same composition

... This is THE composition of the Solar System. All compositional variations of planetary materials are due to differentiation of this primordial material ...
Astronomy Chapter 11 – Meteors, Comets and Asteroids A. Main
Astronomy Chapter 11 – Meteors, Comets and Asteroids A. Main

... been dated to be around 4.5 billion years old. ⇒ In some meteorites the chondrules are embedded in a black, carbon-rich, coal-like substance. These meteorites contain organic compounds including amino acids, which are the building blocks of proteins and genetic material. 2. Asteroids Asteroids are s ...
Short-Period Comets
Short-Period Comets

... Short-Period Comets Short-period comets from the ___________________ come from _________________ between objects. Short-period comets take less than _________ years to orbit the sun. Short-period comets have a _____________ life span as they lose layers each time they pass the ____________. ...
Solar systems like ours may be rare - Space.com
Solar systems like ours may be rare - Space.com

... already formed planets. It's only a snapshot in time and as you look at other clusters at different ages you can build up a better picture." Other scientists agree there are many unanswered questions about solar systems beyond our own. "As the precision with which we can measure improves, we find mo ...
3 Habitable Zones in Extrasolar Planetary Systems
3 Habitable Zones in Extrasolar Planetary Systems

... solar system [6], the Martian orbit position was within the HZ up to about 500 million years ago. Jovian-type planets do not have a solid or liquid surface, covered by an atmosphere, near which organisms may exist. Therefore, usually they are considered as inhabitable. But there is the possibility t ...
Our Solar System
Our Solar System

... lies between Mars and Jupiter. One of the largest in our Solar System is 620 miles in diameter. Asteroids tend to have very eccentric orbits and irregular shapes. Asteroids have always collided with the Earth. This does not happen very often, because most are very far away. Every once in while, the ...
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Directed panspermia

Directed panspermia concerns the deliberate transport of microorganisms in space to be used as introduced species on lifeless planets. Directed panspermia may have been sent to Earth to start life here, or may be sent from Earth to seed exoplanets with life.Historically, Shklovskii and Sagan (1966) and Crick and Orgel (1973) hypothesized that life on Earth may have been seeded deliberately by other civilizations. Conversely, Mautner and Matloff (1979) and Mautner (1995, 1997) proposed that we ourselves should seed new planetary systems, protoplanetary discs or star-forming clouds with microorganisms, to secure and expand our organic gene/protein life-form. To avoid interference with local life, the targets may be young planetary systems where local life is unlikely. Directed panspermia can be motivated by biotic ethics that value the basic patterns of organic gene/protein life with its unique complexity and unity, and its drive for self-propagation.Belonging to life then implies panbiotic ethics with a purpose to propagate and expand life in space. Directed panspermia for this purpose is becoming possible due to developments in solar sails, precise astrometry, the discovery of extrasolar planets, extremophiles and microbial genetic engineering. Cosmological projections suggests that life in space can then have an immense future.
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