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Categories: Mathematics: Statistics, Space: The Solar System

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Space: The Solar System
Published

Dwarf star 200 light years away contains life's building blocks      (via sciencedaily.com) 

Many scientists believe the Earth was initially dry and that water, carbon and nitrogen -- the building blocks for life -- likely came as a result of collisions with objects that began their lives in the cold outer reaches of our solar system. Today, scientists report discovery of the existence of just such an object -- one that once orbited a neighboring star.

Space: The Solar System
Published

Massive comet-like object pollutes atmosphere of a white dwarf      (via sciencedaily.com) 

For the first time, scientists have witnessed a massive object with the makeup of a comet being ripped apart and scattered in the atmosphere of a white dwarf, the burned-out remains of a compact star.

Space: The Solar System
Published

Astronomer searches for signs of life on Wolf 1061 exoplanet      (via sciencedaily.com) 

Astronomers have located the habitable zone, the region where water could exist on the surface of a planet, on the Wolf 1061, a planetary system that's 14 light years away.

Space: The Solar System
Published

How a moon slows the decay of Pluto's atmosphere      (via sciencedaily.com) 

A new study provides additional insight into relationship between Pluto and its moon, Charon, and how it affects the continuous stripping of Pluto's atmosphere by solar wind. When Charon is positioned between the sun and Pluto, the research indicates that the moon can significantly reduce atmospheric loss.

Space: The Solar System
Published

Icy ridges found on Pluto      (via sciencedaily.com) 

Using a model similar to what meteorologists use to forecast weather on Earth and a computer simulation of the physics of evaporating ices, a new study has found evidence that snow and ice features previously only seen on Earth, have been spotted on Pluto.

Space: The Solar System
Published

Modeling offers new perspective on how Pluto's 'icy heart' came to be      (via sciencedaily.com) 

Pluto's "icy heart" is a bright, two-lobed feature on its surface that has attracted researchers ever since its discovery by the NASA New Horizons team in 2015. Of particular interest is the heart's western lobe, informally named Sputnik Planitia, a deep basin containing three kinds of ices--frozen nitrogen, methane and carbon monoxide--and appearing opposite Charon, Pluto's tidally locked moon. Sputnik Planitia's unique attributes have spurred a number of scenarios for its formation, all of which identify the feature as an impact basin, a depression created by a smaller body striking Pluto at extremely high speed.

Space: The Solar System
Published

New analysis adds support for a subsurface ocean on Pluto      (via sciencedaily.com) 

A liquid ocean lying deep beneath Pluto's frozen surface is the best explanation for features revealed by NASA's New Horizons spacecraft, according to a new analysis. The idea that Pluto has a subsurface ocean is not new, but the study provides the most detailed investigation yet of its likely role in the evolution of key features such as the vast, low-lying plain known as Sputnik Planitia (formerly Sputnik Planum).

Space: The Solar System
Published

Cracked, frozen and tipped over: New clues from Pluto's past      (via sciencedaily.com) 

New research by planetary scientists reveals fascinating clues about Pluto, suggesting the small world at the fringes of our solar system is much more active than anyone ever imagined.

Space: The Solar System
Published

Great valley found on Mercury      (via sciencedaily.com) 

Scientists have discovered a new large valley on Mercury that may be the first evidence of buckling of the planet's outer silicate shell in response to global contraction. The researchers discovered the valley using a new high-resolution topographic map of part of Mercury's southern hemisphere created by stereo images from NASA's MESSENGER spacecraft.

Space: The Solar System
Published

Mystery solved behind birth of Saturn’s rings      (via sciencedaily.com) 

A team of researchers has presented a new model for the origin of Saturn's rings based on results of computer simulations. The results of the simulations are also applicable to rings of other giant planets and explain the compositional differences between the rings of Saturn and Uranus.

Space: The Solar System
Published

New Horizons returns last bits of 2015 flyby data to Earth      (via sciencedaily.com) 

NASA's New Horizons mission reached a major milestone this week when the last bits of science data from the Pluto flyby -- stored on the spacecraft's digital recorders since July 2015 -- arrived safely on Earth.

Space: The Solar System
Published

Uranus may have two undiscovered moons      (via sciencedaily.com) 

NASA's Voyager 2 spacecraft flew by Uranus 30 years ago, but researchers are still making discoveries from the data it gathered then. A new study led by University of Idaho researchers suggests there could be two tiny, previously undiscovered moonlets orbiting near two of the planet's rings.

Space: The Solar System
Published

More evidence for ninth planet roming Solar System's outer fringes      (via sciencedaily.com) 

As the search for a hypothetical, unseen planet far, far beyond Neptune's orbit continues, new research provides additional support for the possible existence of such a world and narrows the range of its parameters and location.

Space: The Solar System
Published

Curious tilt of the Sun traced to undiscovered planet      (via sciencedaily.com) 

Planet Nine the undiscovered planet at the edge of the solar system appears to be responsible for the unusual tilt of the Sun, according to a new study.

Space: The Solar System
Published

Possible clouds on Pluto, next target is reddish      (via sciencedaily.com) 

Stern said that Pluto's complex, layered atmosphere is hazy and appears to be mostly free of clouds, but the team has spied a handful of potential clouds in images taken with New Horizons' cameras. "If there are clouds, it would mean the weather on Pluto is even more complex than we imagined," Stern said.

Space: The Solar System
Published

Recently active lava flows on the eastern flank of Idunn Mons on Venus      (via sciencedaily.com) 

The European Space Agency's Venus Express mission has provided a great amount of data from the surface and atmosphere of Earth's inner twin planet. Among these observations was the mapping of the southern hemisphere of Venus in the near infrared spectral range. However the thick and permanent cloud cover of Venus limits the achievable resolution, similar to observing a scene through fog. Using a numerical model, planetary researchers pushed the limits of the data resolution.

Space: The Solar System
Published

Tatooine worlds orbiting two suns often survive violent escapades of aging stars      (via sciencedaily.com) 

Planets that revolve around two suns may surprisingly survive the violent late stages of the stars' lives, according to new research. The finding is surprising because planets orbiting close to a single sun, like Mercury and Venus in our solar system, would be destroyed when the aging star swells into a red giant.

Space: The Solar System
Published

Saturn’s moon Dione harbors a subsurface ocean      (via sciencedaily.com)     Original source 

A subsurface ocean lies deep within Saturn's moon Dione, according to new data from the Cassini mission to Saturn. Two other moons of Saturn, Titan and Enceladus, are already known to hide global oceans beneath their icy crusts, but a new study suggests an ocean exists on Dione as well.

Space: The Solar System
Published

Pluto's 'heart' sheds light on possible buried ocean      (via sciencedaily.com) 

Ever since NASA's New Horizons spacecraft flew by Pluto last year, evidence has been mounting that the dwarf planet may have a liquid ocean beneath its icy shell. Now, by modeling the impact dynamics that created a massive crater on Pluto's surface, a team of researchers has made a new estimate of how thick that liquid layer might be.

Space: The Solar System
Published

Pluto's glaciers: Large heart-shaped nitrogen glacier explained      (via sciencedaily.com) 

What is the origin of the large heart-shaped nitrogen glacier revealed in 2015 on Pluto by the New Horizons spacecraft? Astronomers show that Pluto's peculiar insolation and atmosphere favor nitrogen condensation near the equator, in the lower altitude regions, leading to an accumulation of ice at the bottom of Sputnik Planum, a vast topographic basin. Through their simulations, they also explain the surface distribution and atmospheric abundance of other types of volatiles observed on Pluto.