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anees_100

This is how life on earth could have started | Everyday Science - 0 views

everydayscience.blog/fe-on-earth-could-have-started

how life on earth started

shared by anees_100 on 17 Jun 19 - No Cached
  • anees_100 on 17 Jun 19
     
    A new theory suggests that life on Earth could have started due to an epic clash with another planet. This hypothetical planet is called Theia, and some experts believe that it is also responsible for breaking a portion of the Earth and sending it at full speed into space and eventually becoming our Moon.
Janos Haits

Eyes on the Solar System - 0 views

eyes.nasa.gov

MSL astronomy science Space planetary universe solar cosmology physics education virtual virtual_worlds visualization world simulation online nasa

shared by Janos Haits on 07 Sep 22 - No Cached
  • Janos Haits on 07 Sep 22
     
    Eyes on the Solar System" is a 3-D environment full of real NASA mission data. Explore the cosmos from your computer. Hop on an asteroid. Fly with NASA's Voyager spacecraft. See the entire solar system moving in real time. It's up to you. You control space and time.
Dave Knowles

Buying used astronomy equipment - 0 views

www.astroclassifieds.co.uk/g-used-astronomy-equipment-p53

used buying astronomy equipment telescope mounts eyepieces filters

shared by Dave Knowles on 24 Aug 12 - No Cached
  • Dave Knowles on 24 Aug 12
     
    A guide on buying used astronomy equipment online, very handy tips on what to look out for.
hanz444

NASA's SDO Sees Sun Emit Mid-Level Flare Oct. 1 - 0 views

www.nasa.gov/...sun-emit-mid-level-flare-oct-1

space nasa astronomy

shared by hanz444 on 02 Oct 15 - No Cached
  • hanz444 on 02 Oct 15
     
    The sun emitted a mid-level solar flare, peaking at 8:13 p.m. EDT on Oct. 1, 2015. NASA's Solar Dynamics Observatory, which watches the sun constantly, captured an image of the event. Solar flares are powerful bursts of radiation. Harmful radiation from a flare cannot pass through Earth's atmosphere to physically affect humans on the ground, however -- when intense enough -- they can disturb the atmosphere in the layer where GPS and communications signals travel.
Todd Suomela

Guest Post: Tom Levenson on Isaac Newton as the First Cosmologist | Cosmic Variance - 0 views

cosmicvariance.com/...ewton-as-the-first-cosmologist

astronomy astrophysics history physics science sts

shared by Todd Suomela on 05 Jun 08 - Cached
  • To make his ambitions absolutely clear Newton used the same phrase for the title of book three. There his readers would discover “The System of the World.” This is where the literary structure of the work really comes into play, in my view. Through book three, Newton takes his audience through a carefully constructed tour of all the places within the grasp of his new physics. It begins with an analysis of the moons of Jupiter, demonstrating that inverse square relationships govern those motions. He went on, to show how the interaction between Jupiter and Saturn would pull each out of a perfect elliptical orbit; the real world, he says here, is messier than a geometer’s dream.
  • Newton knew what he had done. He was no accidental writer. A parabola, of course, is a curve that keeps on going – and that meant that at the end of a very long and very dense book, he lifted off again from the hard ground of daily reality and said, in effect, look: All this math and all these physical ideas govern everything we can see, out to and past the point where we can’t see anymore. Most important, he did so with implacable rigor, a demonstration that, he argued, should leave no room for dissent. He wrote “The theory that corresponds exactly to so nonuniform a motion through the greatest part of the heavens, and that observes the same laws as the theory of the planets and that agrees exactly with exact astronomical observations cannot fail to be true.” (Italics added).
Maluvia Haseltine

Study plunges standard Theory of Cosmology into Crisis - 0 views

www.physorg.com/print160726282.html

Astrophysics

shared by Maluvia Haseltine on 25 Jul 09 - Cached
  • Maluvia Haseltine on 25 Jul 09
     
    As modern cosmologists rely more and more on the ominous "dark matter" to explain otherwise inexplicable observations, much effort has gone into the detection of this mysterious substance in the last two decades, yet no direct proof could be found that it actually exists. Even if it does exist, dark matter would be unable to reconcile all the current discrepancies between actual measurements and predictions based on theoretical models. Hence the number of physicists questioning the existence of dark matter has been increasing for some time now.
Janos Haits

Mobile Observatory - Home - 2 views

zima.co

observatory mobile science astronomy space Universe planetary solar

shared by Janos Haits on 22 Jul 13 - No Cached
  • Janos Haits on 22 Jul 13
     
    Mobile Observatory is one of the most complete astronomy apps on the Android market and the perfect tool for anybody interested in the sky's wonders, from the occasional sky gazer to the passionate amateur astronomer.
antariksha2011

Total Solar Eclipse - Be Ready with Special T-Shirts - 0 views

antariksha.org/solar-eclipse-t-shirts

Solar Eclipse Total Totality Great American

shared by antariksha2011 on 17 Aug 17 - No Cached
  • antariksha2011 on 17 Aug 17
     
    A long awaited and special event Great American Total Solar Eclipse will darken the sky on 21st August, 2017 all the way from Oregon to South Carolina. Moon is going to cover entire Sun's disk on this day. For this special occasion, you must have some attractive T-Shirts to create awareness. So be ready !
Astro Biology

Latest News from Astrobiology Magazine - 0 views

www.pinterest.com/astrobiology

nasa news astrobiology space exploration planet solar system

shared by Astro Biology on 22 Sep 14 - No Cached
  • Astro Biology on 22 Sep 14
     
    Get latest NASA invention's pictures, discoveries, technologies, space exploration and other news only at Astrobiology Magazine. Join us on Pinterest to see current happenings in Universe.
  • Astro Biology on 22 Sep 14
     
    Get latest NASA invention's pictures, discoveries, technologies, space exploration and other news only at Astrobiology Magazine. Join us on Pinterest to see current happenings in Universe.
Astro Biology

Know How Cassini Looking Mysterious Feature Evolve in Titan Sea - 0 views

www.astrobio.net/...rious-feature-evolve-titan-sea

spacecraft cassini space station solar system exploration

shared by Astro Biology on 10 Oct 14 - No Cached
  • Astro Biology on 10 Oct 14
     
    Do you know NASA's Cassini spacecraft is monitoring the evolution of a mysterious feature in a huge hydrocarbon sea on Saturn's moon Titan? Curious to read more about mysterious feature?
  • Astro Biology on 10 Oct 14
     
    Do you know NASA's Cassini spacecraft is monitoring the evolution of a mysterious feature in a huge hydrocarbon sea on Saturn's moon Titan? Curious to read more about mysterious feature?
Janos Haits

AstroWeb: Astronomy/Astrophysics on the Internet - 0 views

www.cv.nrao.edu/...astronomy.html

science astroweb astronomical space physics Education planetary cosmology astronomy Astrophysics universe galactic solar

shared by Janos Haits on 07 Mar 11 - Cached
  • Janos Haits on 07 Mar 11
     
    Astronomy/Astrophysics on the Internet
Todd Suomela

SkyandTelescope.com - News from Sky & Telescope - A Megascope for Hawaii - 0 views

www.skyandtelescope.com/...48184442.html

astronomy science politics optics technology state(Hawaii)

shared by Todd Suomela on 05 Aug 09 - Cached
  • TMT will also cost between 1 and 2 billion dollars when all is said and done. This is not quite at the scale of the world’s biggest science projects, like the Large Hadron Collider or the James Webb Space Telescope, but it’s getting there. In fact, TMT and other proposed observatories of this generation may end up being the biggest telescopes on Earth for all time because the funding required to go even larger would more logically be directed towards putting telescopes in orbit.
  • Adaptive optics is a big part of TMT’s design. It will work both on Mauna Kea and Armazones, but astronomers expect it will work better on Mauna Kea. This is because the upper atmosphere—the part above the boundary layer—is somewhat less turbulent above Mauna Kea than it is above Armazones. Why? According to Racine it’s partly a function of latitude. Because Mauna Kea is nearer the equator it’s relatively unaffected by the jet streams that flow at higher latitutdes both north and south. Armazones’ upper atmosphere is a bit more turbulent in comparison and so somewhat harder for adaptive optics to deal with.
  • Todd Suomela on 05 Aug 09
     
    Why and how did the Thirty Meter Telescope project decide to build at Mauna Kea?
Todd Suomela

Guest Post: Evalyn Gates on Cosmic Magnification (or - Invasion of the Giant Blue Space... - 0 views

blogs.discovermagazine.com/...f-the-giant-blue-space-amoebas

astronomy astrophysics gravity-lens physics science gravity methods

shared by Todd Suomela on 19 Jul 09 - Cached
  • This is not just a pretty picture, however – the image packs a lot of scientific information. The authors extract the mass distribution in the cluster (which has implications for cosmological models), measure the mass-to-light ratio of the bright galaxy in the center of the cluster, and use the magnifying power of the lens to search for even more distant galaxies. The basic idea is to construct a model of the lens, starting with the cluster galaxies and a dark matter halo; then refine the model to reproduce the multiple images that are seen. Using this refined model it’s possible to predict the location of additional images of a given source, and to identify regions of high magnification that can then be examined for multiple images of other sources. Any additional images that are found can be used to further refine the model and so on.
  • This galaxy has been lensed by the warp in spacetime created by the cluster. Light from the galaxy, which lies almost directly behind the center of the cluster but much farther away from us, travels along several curved paths through the cluster lens, producing multiple magnified images of the galaxy. The inset box shows a computer generated model of the unlensed source galaxy, enlarged by a factor of four so that the details, including the spiral arm structure, are visible. Without the lensing power of the cluster, we would see this galaxy as a single small blue smudge. In general, lensing will both magnify and distort (shear) images of a background source. This lens is fairly unique in that we see large but relatively intact images of the spiral galaxy, which implies that the mass distribution in the central region of the cluster must be nearly uniform.
Astro Biology

Know How Origin of Earth's survived when Oxygen has Abundant - 0 views

www.astrobio.net/...life-know-now-date

earth atmosphere oxygen for life planet solar system news from nasa

shared by Astro Biology on 04 Nov 14 - No Cached
  • Astro Biology on 04 Nov 14
     
    We all are aware of the fact that billions of years ago, there was very little oxygen on Earth to breathe. Scientist of University of California at Riverside (UCR) have researched when in Earth's history oxygen may have abundant. Curious to know how origins of Earth survived?
  • Astro Biology on 04 Nov 14
     
    We all are aware of the fact that billions of years ago, there was very little oxygen on Earth to breathe. Scientist of University of California at Riverside (UCR) have researched when in Earth's history oxygen may have abundant. Curious to know how origins of Earth survived?
Sandra Flores

Revealing pattern without planets - 0 views

Revealing pattern without planets Planets around young suns are formed in a disk of gas and dust orbiting the star just created. Many such disks have now been detected around young stars. In some y...

started by Sandra Flores on 05 Jan 15 no follow-up yet
Sandra Flores

Periodic Table of Elements completed ? - 0 views

Is the Periodic Table of Elements wholly or could it still be unknown elements in the universe?In the periodic table of the elements, the chemical elements are listed according to their atomic numb...

started by Sandra Flores on 05 Jan 15 no follow-up yet
Sandra Flores

Strange stars on the heel - 0 views

Strange stars on the heelA new star strange lurks perhaps in our galaxy - and an astrophysicist at the Weizmann Institute is close on the track. Prof. Vladimir Usov from the Weizmann Institute...

started by Sandra Flores on 05 Jan 15 no follow-up yet
Sandra Flores

Periodic Table of Elements completed ? - 0 views

Is the Periodic Table of Elements wholly or could it still be unknown elements in the universe?In the periodic table of the elements, the chemical elements are listed according to their atomic numb...

started by Sandra Flores on 09 Jan 15 no follow-up yet
Sandra Flores

Strange stars on the heel - 0 views

Strange stars on the heelA new star strange lurks perhaps in our galaxy - and an astrophysicist at the Weizmann Institute is close on the track. Prof. Vladimir Usov from the Weizmann Institute...

started by Sandra Flores on 09 Jan 15 no follow-up yet
Astro Biology

Know More About Plenty of Water in Asteroid Fragments - 0 views

www.astrobio.net/...dance-water-asteroid-fragments

asteroid water fragment news from nasa space exploration

shared by Astro Biology on 28 Oct 14 - No Cached
  • Astro Biology on 28 Oct 14
     
    Do you know new study could provide visions about the abundance of water in fragments from a famous asteroid? This research mainly focused on a mineral called apatite. Want to know more about this asteroid?
  • Astro Biology on 28 Oct 14
     
    Do you know new study could provide visions about the abundance of water in fragments from a famous asteroid? This research mainly focused on a mineral called apatite. Want to know more about this asteroid?
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