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Have Gravitational Waves Been Detected? Scientists Provide Update Today

Scientists are widely expected to announce the first-ever direct detection of elusive gravitational waves this morning, and you can watch the big moment live.

Researchers affiliated with the Laser Interferometer Gravitational-Wave Observatory (LIGO) are holding a news conference today (Feb. 11) at 10:30 a.m. EST (1530 GMT) at the National Press Club in Washington, D.C., and you can watch it live, courtesy of the LIGO consortium.

Read more: http://buff.ly/1Pnmvs9

Watch live: http://buff.ly/1T9M6Hx
Scientists are widely expected to announce the first-ever direct detection of elusive gravitational waves Thursday morning, and you can watch the big moment live.
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Yes...... They have detected them .,...... Congratulations NASA and all related
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Exotic Cosmic Locales Available as Space Tourism Posters

Last year, five posters depicting planets beyond our solar system were introduced as part of JPL's Exoplanet Travel Bureau series. They are included in the latest set of 14 posters, which also show such locales as Mars, Jupiter's moon Europa, Saturn's vapor-spewing moon Enceladus, and the dwarf planet Ceres.

The posters are the brainchild of The Studio at JPL, a design and strategy team that works with JPL scientists and engineers to visualize and depict complex science and technology topics. Their work is used in designing space missions and in sharing the work of NASA/JPL with the public.

Read more: http://buff.ly/1PmxiTo

You can take a virtual trip to 14 alien worlds, and maybe even plaster your living room with planetary art, via the new, futuristic space tourism posters. The posters are available free for downloading and printing at: http://buff.ly/1o4u0eK
Fourteen space travel posters of colorful, exotic cosmic settings are now available free for downloading and printing.
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Kepler-454b: Rocky or Not?

Planets with radii less than 1.6 Earth radii have rocky, Earth-like compositions, following a single relation between their mass and radius. Planets between 2 and 2.7 Earth radii, however, have lower densities and don’t follow a single mass-radius relation. Their low densities suggest they contain a significant fraction of volatiles, likely in the form of a thick gas envelope of water, hydrogen, and/or helium.

The planet Kepler-454b, discovered transiting a Sun-like star, was initially estimated to have a radius of 1.86 Earth radii — placing it in between these two categories. A team of astronomers led by Sara Gettel (Harvard-Smithsonian Center for Astrophysics) have since followed up on the initial Kepler detection, hoping to determine the planet’s composition.

Kepler-454b’s newly measured size and mass place it firmly in the category of non-rocky, larger, less dense planets (the authors calculate a density of ~2.76 g/cm3, or roughly half that of Earth). This seems to reinforce the idea that rocky planets don’t grow larger than ~1.6 Earth radii, and planets with mass greater than about 6 Earth masses are typically low-density and/or swathed in an envelope of gas.

Read more: http://buff.ly/20UTwRC
Is the planet Kepler-454b rocky, like a large Earth? Or gaseous, like a small Neptune? A recent study finds out.
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Good one
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Hundreds of Hidden Galaxies Glimpsed Behind Milky Way

Scientists used an Australian radio telescope famous for assisting with the moon landings to peer through the gas and dust of the Milky Way, and uncovered 883 galaxies hidden behind it — one-third of which were never observed before.

The new observations, made using the Commonwealth Scientific and Industrial Research Organization (CSIRO) Parkes Observatory, in Australia, found three new galaxy concentrations (NW1, NW2 and NW3) and two new clusters (CW1 and CW2). The researchers put a new, 21-centimeter (8.3 inches) multibeam receiver on the observatory that allowed it to map the sky 13 times faster than it had previously, officials said in the statement. Thus, they were able to pin down a region beyond the Milky Way that astronomers had wondered about for decades.

Watch here: http://buff.ly/1KDWFB6
A new study reveals 883 galaxies hidden behind the Milky Way.
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Amzing
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Earth-like planets have Earth-like interiors

"We wanted to see how Earth-like these rocky planets are. It turns out they are very Earth-like," says lead author Li Zeng of the Harvard-Smithsonian Center for Astrophysics (CfA).

To reach this conclusion Zeng and his co-authors applied a computer model known as the Preliminary Reference Earth Model (PREM), which is the standard model for Earth's interior. They adjusted it to accommodate different masses and compositions, and applied it to six known rocky exoplanets with well-measured masses and physical sizes.

They found that the other planets, despite their differences from Earth, all should have a nickel/iron core containing about 30 percent of the planet's mass. In comparison, about a third of the Earth's mass is in its core. The remainder of each planet would be mantle and crust, just as with Earth.

Read more at: http://buff.ly/1Pj3TcP
Every school kid learns the basic structure of the Earth: a thin outer crust, a thick mantle, and a Mars-sized core. But is this structure universal? Will rocky exoplanets orbiting other stars have the same three layers? New research suggests that the answer is yes - they will have interiors very similar to Earth.
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stop noising

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Galactic Space Oddity Discovered

An international team of researchers led by Aaron Romanowsky of San José State University has used the Subaru Telescope to identify a faint dwarf galaxy disrupting around a nearby giant spiral galaxy. The observations provide a valuable glimpse of a process that is fleeting but important in shaping galaxies.

"The outer regions of giant galaxies like our own Milky Way appear to be a jumble of debris from hundreds of smaller galaxies that fell in over time and splashed into smithereens," said Romanowsky. "These dwarfs are considered building blocks of the giants, but the evidence for giants absorbing dwarfs has been largely circumstantial. Now we have caught a pair of galaxies in the act of a deadly embrace."

Read more: http://buff.ly/1QovSVX
Press Release. Galactic Space Oddity Discovered. February 8, 2016. An international team of researchers led by Aaron Romanowsky of San José State University has used the Subaru Telescope to identify a faint dwarf galaxy disrupting around a nearby giant spiral galaxy. The observations provide a ...
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Studying the Solar System with NASA’s Webb Telescope

“The James Webb Space Telescope will discover new rings and moons, will give us new insight into what rings and moons are made of, and will be our best eyes on the ongoing behavior of these ever-evolving systems,” said Matthew Tiscareno of the SETI Institute.

Tiscareno led one of eleven teams that contributed papers regarding these and other possibilities that are described in a 2016 special issue of the Publications of the Astronomical Society of the Pacific. The eleven papers were contributed by authors from across the planetary science community, with Goddard scientists taking the lead ondiscussing how to use the Webb telescope to study Mars, Titan, and near-Earth objects, and the outer solar system. Stefanie Milam, the Webb telescope’s deputy project scientist for planetary science at NASA’s Goddard Space Flight Center in Greenbelt, Maryland, served as guest editor of the special issue

These studies will help scientists understand more about the formation of the solar system and how Earth became capable of supporting life.

Read more: http://buff.ly/1PxTzvm
NASA's new Webb telescope will probe many of the mysteries of the deep universe. But in addition, it will investigate planets, moons, comets, asteroids and other bodies in our solar system. Matthew Tiscareno of the SETI Institute, the lead author on one of 11 papers discussing how to use this ...
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yet they know not;  what they are made of.................... :-)
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Spying Saturn’s moonlets

The F ring, a section of which is featured in this image from the Cassini spacecraft, is only a few hundred kilometres wide and is the most active of Saturn’s rings, with features that shape-shift over the course of just a few hours. It has two ‘shepherding’ satellites that orbit just inside and outside its bounds, named Prometheus and Pandora respectively. However, these aren’t the only orbiting bodies associated with the F ring — it is also parent to numerous small natural satellites known as ‘moonlets’.

Moonlets can be detected by the ways in which they disturb their surroundings. Such a disturbance is shown in this Cassini image; scientists believe that a small population of differently sized moonlets were responsible for forming this feature as they collide with and perturb the core of the ring – some of the small moonlets can be seen emerging below the ring just left of the centre. In fact, most of the F ring’s morphology and behaviour is caused by the continual gravitational and collisional effects of its embedded moonlets, often combined with the perturbing effect of Prometheus.

Image credit: NASA/JPL/Space Science Institute

Read more: http://buff.ly/1TUaq0P
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Nice
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Have Gravitational Waves Been Discovered?!?

For the past 90 years, the predictions laid out Einstein's general theory of relativity have continued to be confirmed by experimental science. The last hold out is gravitational waves - the idea that certain gravitational events cause actual ripples in Spacetime. The problem is that the effects are almost beyond microscopic, so they are incredibly hard to detect. But have scientist done it? Have gravitational waves finally been directly observed???

This PBS Space Time video was published in October 2015 and gives a good overview of gravitational waves and the (then) current results. Enjoy this video while we all await tomorrow's press conference from the LIGO team!

Watch here: http://buff.ly/1Lgi2Ua
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I HAVE CONCRETE THEORY ON GRAVITY WHICH IS MORE STRONG THAN PREVIOUS ONES

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EPOD: Orion, the Gibbous Moon and Sirius Observed from Southeastern France

Photographer: Carla Brito
Summary Authors: Carla Brito; Jim Foster

The photo above shows the constellation of Orion (at center) accompanied by the nearly full Moon as observed from southeastern France on December 26, 2015. Sirius, the brightest nighttime star visible from Earth, is at bottom center and the constellation just above the Moon is Gemini.

In the foreground, the season's first snow cover coats the hills outside of Grenoble, France. Note also the fog forming in the distant valley (background left).

More info: http://buff.ly/1PBPE0p
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Bună dimineața 
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Gravitational Waves and How They Distort Space

It’s official: on February 11, 10:30 EST, there will be a big press conference about gravitational waves by the people running the gravitational wave detector LIGO. It’s a fair bet that they will announce the first direct detection of gravitational waves, predicted by Albert Einstein 100 years ago. If all goes as the scientists hope, this will be the kick-off for an era of gravitational wave astronomy: for learning about some of the most extreme and violent events in the cosmos by measuring the tiny ripples of space distortions that emanate from them.

Time to brush up on your gravitational wave knowledge, if you haven’t already done so!

Read more: http://buff.ly/1T2is6Q
Rumor has it that gravitational waves might be detected soon - a late triumph for Einstein's theory of general relativity. But what are these waves?
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Good
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A Piece of Mars: The smallest dunes | Lori Fenton's Blog

There are two small dome-shaped dunes in this frame (0.96×0.54 or 0.6×0.33 mi). If they got any larger, they’d form slip faces. Any smaller and they’d just be random drifts of windblown sand. Dunes form at a particular size (~125 m in this case) related to the distance it takes for sand grains to accelerate to the background wind speed. This distance is bigger on Mars than on Earth, where the smallest dunes are ~20 m across.

Image credit: HiRISE ESP_044198_1480 NASA/JPL/Univ. of Arizona

Larger image: http://buff.ly/1Qovuqt
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Swimming Impossible :-)
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Our mission is to explore, understand and explain the origin, nature and prevalence of life in the universe.
Introduction

We believe we are conducting the most profound search in human history — to know our beginnings and our place among the stars.

The SETI Institute is a private, nonprofit organization dedicated to scientific research, education and public outreach.

The Institute comprises 3 centers, the Center for SETI Research, the Carl Sagan Center for the Study of Life in the Universe and the Center for Education and Public Outreach.

Founded in November 1984, the SETI Institute began operations on February 1, 1985. Today it employs over 120 scientists, educators and support staff. Research at the Institute is anchored by two centers. Dr. Gerry Harp leads the Center for SETI (Search for Extraterrestrial Intelligence) Research and  Dr. David Morrison is the Director for the Carl Sagan Center for the Study of Life in the Universe. Edna DeVore leads our Center for Education and Public Outreach.