Scientists hope to answer many question about Mercury, such as is its core liquid or solid? They also want to know the origin of the many long marks across its surface, and whether there could be water and ice at the poles of this intensely hot planet.
NASA's Stardust-NExT spacecraft is nearing a celestial date with comet Tempel 1 at approximately 8:37 p.m. PST (11:37 p.m. EST), on Feb. 14. The mission will allow scientists for the first time to look for changes on a comet's surface that occurred following an orbit around the sun.
Recent analysis of cosmic microwave background radiation could lead to the conclusion that observed microwave rings are echoes of a "cyclic universe".
These deductions have been met with some doubt within the astrophysics community, and three papers have already been written to rebut their claims. Until more is learned, it will have to remain a theory—but it's an awesome one.
A mere 20 light-years away in the constellation Libra, red dwarf star Gliese 581 has received much scrutiny by astronomers in recent years.
Earthbound telescopes had detected the signatures of multiple planets orbiting the cool sun, two at least close to the system's habitable zone -- the region where an Earth-like planet can have liquid water on its surface. Now a team headed by Steven Vogt (UCO Lick), and Paul Butler (DTM Carnagie Inst.) has announced the detection of another planet, this one squarely in the system's habitable zone. Based on 11 years of data, their work offers a very compelling case for the first potentially habitable planet found around a very nearby star. Shown in this artist's illustration of the inner part of the exoplanetary system, the planet is designated Gliese 581g, but Vogt's more personal name is Zarmina's World, after his wife. The best fit to the data indicates the planet has a circular 37 day orbit, an orbital radius of only 0.15 AU, and a mass 3.1 times the Earth's. Modeling includes estimates of a planet radius of 1.5, and gravity at the planet's surface of 1.1 to 1.7 in Earth units.
Finding a habitable planet so close by suggests there are many others in our Milky Way galaxy.
The total number of stars in the Universe "is likely three times bigger than realized." Yale University astronomer Pieter van Dokkum says there are "possibly trillions of Earths orbiting these stars," dramatically increasing the possibility of finding alien civilizations.
"Rhea's oxygen appears to come from water ice on Rhea's surface when Saturn's magnetic field rotates over the moon and showers it with energetic particles trapped in the magnetic field," said Coates from UCL’s Mullard Space Science Laboratory
A team of scientists and engineers at NASA's Jet Propulsion Laboratory has brought the world one step closer to 'hearing' gravitational waves -- ripples in space and time predicted by Albert Einstein in the early 20th century.
Astronomy | Mike Brown is an astronomer, and in my opinion is mainly responsible for kick-starting the demotion of Pluto as a planet -- he and his team found Eris, an objec (Pluto still may be the biggest dwarf planet | Bad Astronomy http://goo.gl/fb/xwjIa)
Massive black holes have been found at the centers of almost all galaxies, where the largest galaxies -- who are also the ones embedded in the largest halos of dark matter -- harbor the most massive black holes. This led to the speculation that there is a direct link between dark matter and black holes, i.e., that exotic physics controls the growth of a black hole. Scientists at the Max Planck Institute of Extraterrestrial Physics, the University Observatory Munich, and the University of Texas in Austin have now conducted an extensive study of galaxies to prove that black hole mass is not directly related to the mass of the dark matter halo but rather seems to be determined by the formation of the galaxy bulge.
With the discovery of vast amounts of water on the Moon, some frozen in the shadows of craters at the Lunar poles and some chemically bonded with the regolith, interest in lunar mining has arisen among commercial space entrepreneurs.
A research team led by astronomers from the University of Tokyo and the National Astronomical Observatory of Japan (NAOJ) has discovered that inclined orbits may be typical rather than rare for exoplanetary systems.
The silhouette of the Moon taking a dark bite out of the Sun is obvious enough, as are some interesting sunspots on the Sun’s face… but wait a sec… that one spot isn’t a spot at all, it’s the International Space Station! This was a double eclipse!
For a few hours on the night of Dec. 20 to Dec. 21, theattention of tens of millions of people will be drawn skyward, where themottled, coppery globe of our moon -will hang completely immersed f in thelong, tapering cone of shadow cast out into space by our Earth. If the weatheris clear, favorably placed skywatchers will have a view of one of nature's mostbeautiful spectacles: a total eclipse of the moon.
Watch an unusually long filament explode out from the Sun.
The filament had been seen hovering over the Sun's surface for over a week before it erupted earlier this month.
The image sequence was taken by the Earth-orbiting Solar Dynamics Observatory (SDO) in a color of ultraviolet light specifically emitted by helium. The explosion created Coronal Mass Ejections which dispersed high energy plasma into the Solar System. This plasma cloud, though, missed the Earth and so did not cause auroras. The above eruption and an unusually expansive eruption that occurred in August are showing how widely separated areas of the Sun can sometimes act in unison. Explosions like this will likely become more common over the next few years as our Sun moves toward Solar Maximum activity.
Still a long way to find ET but well done marketing guys at NASA...NASA-funded astrobiology research has changed the fundamental knowledge about what comprises all known life on Earth.
Researchers conducting tests in the harsh environment of Mono Lake in California have discovered the first known microorganism on Earth able to thrive and reproduce using the toxic chemical arsenic. The microorganism substitutes arsenic for phosphorus in its cell components.
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