The biological and geological future
of the Earth can be extrapolated based upon the estimated effects of
several long-term influences. These include the chemistry at the Earth's
surface, the rate of cooling of the planet's interior, the gravitational
interactions with other objects in the Solar System, and a steady increase in
the Sun's luminosity.
Thursday, July 4, 2013
Cassini space probe will see Saturn eclipse the sun on July 19
It discus about NASA’s
Cassini spacecraft, now orbiting Saturn and weaving in and among its moons,
will be aligned in such a way that Saturn will eclipse the sun as seen from the
spacecraft. This simulated view from NASA’s Cassini spacecraft shows the
expected positions of Saturn and Earth on July 19, 2013, around the time
Cassini will take Earth’s picture. Cassini will be about 898 million miles
(1.44 billion kilometers) away from Earth at the time. That distance is nearly
10 times the distance from the sun to Earth. Image credit: NASA/JPL-Caltech.
X-Ray in Astronomy
Astronomers study light
from all across the electromagnetic spectrum to piece together the story of the
universe. X-ray astronomy looks at high
energy, short wavelength light – over 40 times smaller than the shortest
wavelength our eyes can detect. This
light, emitted by gas heated to millions of degrees, provides a glimpse into
extreme environments like black holes, neutron stars, and colliding galaxies.
Wednesday, July 3, 2013
Closest Moon in 2013
Do you know what is
Supermoon? Ya, I think you all know about this one. Supermoon is a new or full
moon which occurs with the moon at or near (within 90% of) its closest approach
to Earth in a given orbit. Earth, moon and sun are all in a line, with moon in
its nearest approach to Earth. In 22-23 June 2013 is the closest moon with
Earth for all of 2013. If you saw this supermoon last week, you would be amazed
for what you see. The moon was so beautiful and looked so close.
NASA TELESCOPE
This is the new
telescope in the universe. The large, new astronomical telescope, Atacama Large
Millimeter Array, ALMA consists of 66 radio telescopes and is the largest and
most ambitious ground-based telescope to date. It has just been completed in
Chile and is now beginning observations. Although they are called radio
telescopes it does not mean that they listen for sound – they observe radio
waves, which are long wavelength electromagnetic radiation. That is to say
light which is outside the visible spectrum. Long wavelength radiation is
important in order to observe particular phenomena in the universe.
Wednesday, June 12, 2013
Unknown Facts about Mars
Do you know Mars? Ya, It’s a planet, one of planet in our solar
system. Everyone knows about this planet generally. For the example, everyone
knows Mars as Red Planet, right? Or they know that Mars is the fourth closest
planet to the sun. They don’t know more specific about Mars. In this article, I
will talk about some facts about mars that you don’t know before. You will get
new information. Check this out guys.
Thursday, April 11, 2013
Quasars
Quasars is a very energetic and distant active galactic nucleus. These mysterious
starlike objects shine from the outermost limits of the universe, helping
scientists learn about the earliest stages of existence. We’ve since learned
that a quasar is actually a black hole at the center of a huge, distant galaxy.
Perhaps more interesting, quasars give off 1,000 times more energy than the
entire Milky Way galaxy.
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