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August 27, 2013
SPACE TRAVEL
NASA technologist makes traveling to hard-to-reach destinations easier
Greenbelt MD (SPX) Aug 06, 2013
Traveling to remote locations sometimes involves navigating through stop-and-go traffic, traversing long stretches of highway and maneuvering sharp turns and steep hills. The same can be said for guiding spacecraft to far-flung destinations in space. It isn't always a straight shot. A NASA technologist has developed a fully automated tool that gives mission planners a preliminary set of detailed directions for efficiently steering a spacecraft to hard-to-reach interplanetary destinations, such as ... read more
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SATURN DAILY

Gravitational tide the secret of Saturn's weird moon
Enceladus, a white moon of Saturn with ice-spewing volcanoes, owes its strangeness to tides of gravitational forces exerted by its mother, a study said on Wednesday. Discovered in 1789 by William Herschel, Enceladus measures only 504 kilometres (315 miles) across yet is one of the great oddities of the Solar System. Its surface is a gorgeous white shell of ice, rather than asteroid-pocked rock and dust, and the surface is pristine except for a network of fractures near its south pole. These cracks - dubbed "tiger stripes" - emit fountains of water vapour that instantly turn into icy grains on contact with the chill vacuum of space. Some astrophysicists conclude that the worldlet harbours an ocean of saltwater, which in turn makes it a good candidate as a source for life. But how can a sub-surface sea exist, if the ambient temperature is close to absolute zero - -273 degrees Celsius (-460 degrees Fahrenheit) - and the Sun is a distant dot? The answer, say theorists, lies with a phenomenon called tidal forces. They argue that the gravitational pull exerted by Saturn, the second largest planet of the Solar System, squeezes Enceladus' innards, causing friction whose heat allows the water to remain in a liquid state. Long debated, the notion has now gained the support of comparisons of the icy plume as the moon crawls around Saturn on an egg-shaped orbit. When Enceladus is closest to Saturn, the plume is at its dimmest, a sign that the fractures are being closed up by a mighty gravitational pull from the giant mother plant, and so relatively little water escapes, according to the new study. When Enceladus is at its farthest point from Saturn, the plume is several times brighter, suggesting that the fractures open out - rather like an unclenched fist - and more water is disgorged. The evidence comes from 252 infra-red images taken by the great US explorer probe Cassini during its lonely swings around the planet. They provide "strong evidence that tidal forces do play an important role in controlling Enceladus' plume activity, perhaps by changing the width of the conduits between the surface and various underground reservoirs," says the paper, led by Matthew Hedman of Cornell University in New York. Many of the icy grains from Enceladus fall back on its surface, which explains its dazzling white surface. The ice may also be the origin of one of the rings of Saturn that give the gas giant its special beauty, according to some thinking. ri/bm ... more
EARLY EARTH

How Did Earth's Primitive Chemistry Get Kick Started?
How did life on Earth get started? Three new papers co-authored by Mike Russell, a research scientist at NASA's Jet Propulsion Laboratory, Pasadena, Calif., strengthen the case that Earth's first li ... more
SATURN DAILY

Mystery of the Missing Waves on Titan
One of the most shocking discoveries of the past 10 years is how much the landscape of Saturn's moon Titan resembles Earth. Like our own blue planet, the surface of Titan is dotted with lakes and se ... more
EARTH OBSERVATION

NASA Releases Images of Earth Taken by Distant Spacecraft
Color and black-and-white images of Earth taken by two NASA interplanetary spacecraft on July 19 show our planet and its moon as bright beacons from millions of miles away in space. NASA's Cas ... more


EARTH OBSERVATION

The First Interplanetary Photobomb
Consider it the first interplanetary photobomb. On July 19th, NASA's Cassini spacecraft will photograph Earth through the rings of Saturn--and NASA wants you to jump into the shot. "Cassini ha ... more


SATURN DAILY

Revealed - the mystery of the gigantic storm on Saturn
We now understand the nature of the giant storms on Saturn. Through the analysis of images sent from the Cassini space probe belonging to the North American and European space agencies (NASA and ESA ... more
spacecraft sub-system supplier
CubeSats, SmallSats and MicroSats
EXO LIFE

Antifreeze on Titan Could Affect Its Chances for Life
Antifreeze normally helps prevent freezing, but scientists find a common antifreeze compound that might exist on Saturn's largest moon Titan can get trapped within ice-like cages. This discove ... more
EARTH OBSERVATION

Cassini Probe to Take Photo of Earth From Deep Space
NASA's Cassini spacecraft, now exploring Saturn, will take a picture of our home planet from a distance of hundreds of millions of miles on July 19. NASA is inviting the public to help acknowledge t ... more
Military Space News, Nuclear Weapons, Missile Defense
Revealed: the Pentagon's secret UFO-hunting program

NATO urges Russia to respond to US missile concerns

N.Korea must 'earn its way back to table,' Tillerson tells UN

China sidesteps blame over S. Korean journalist's beating

US envoy says 'real dialogue' needed with N. Korea

Mattis emphasizes diplomacy in dealing with Iran

N. Korea 'agent' charged with WMD sale plot in Australia

EXO WORLDS

Little Scope Discovers Metal-Poor Cousin of Famous Planet
A scientific team led by University of Louisville doctoral student Karen Collins has discovered a hot Saturn-like planet in another solar system 700 light-years away. Collins announced the discovery ... more
EXO LIFE

Cassini sees precursors to aerosol 'snow' on Titan
Scientists have confirmed the presence of PAHs - Polycyclic Aromatic Hydrocarbons - in the upper atmosphere of Saturn's largest moon, Titan. The study, based on data from the VIMS instrument on the ... more
SATURN DAILY

Cassini Finds Hints of Activity at Saturn Moon Dione
From a distance, most of the Saturnian moon Dione resembles a bland cueball. Thanks to close-up images of a 500-mile-long (800-kilometer-long) mountain on the moon from NASA's Cassini spacecraft, sc ... more
It's been 40 years since Apollo ... Time to go Back




Tempur-Pedic Mattress Comparison & Memory Foam Mattress Review

Training Space Professionals Since 1970
MARSDAILY

Bacterium from Canadian High Arctic and life on Mars
The temperature in the permafrost on Ellesmere Island in the Canadian high Arctic is nearly as cold as that of the surface of Mars. So the recent discovery by a McGill University led team of scienti ... more
SATURN DAILY

Wild Weather Could Be Ahead on Titan
Saturn's moon Titan might be in for some wild weather as it heads into its spring and summer, if two new models are correct. Scientists think that as the seasons change in Titan's northern hemispher ... more
24/7 News Coverage
Scientists create successful mass production system for bioengineered livers

After the fire, charcoal goes against the grain, with the flow

A dynamic East Antarctic ice sheet has repeatedly grown and shrunk

NASA scientists embark on extreme Antarctic Trek

Scientists share various perspectives on ozone layer recovery

How much soil goes get washed down the drain

Primordial mutation helps explain origin of some organs in vertebrates

SATURN DAILY

Cassini Shapes First Global Topographic Map of Titan
Scientists have created the first global topographic map of Saturn's moon Titan, giving researchers a valuable tool for learning more about one of the most Earth-like and interesting worlds in the s ... more
SATURN DAILY

'Tis the Season -- for Plasma Changes at Saturn
Researchers working with data from NASA's Cassini spacecraft have discovered one way the bubble of charged particles around Saturn - known as the magnetosphere - changes with the planet's seasons. ... more
SATURN DAILY

See Saturn at its Best and Brightest
The Solar System is a beautiful place filled with wonders that NASA space probes are only beginning to discover. There's a tendency, though, for people to become indifferent; every year Hubble, Cass ... more
SATURN DAILY
International Space Agencies Outline Steps to Take Humans to Mars

Snapping Pictures of the Martian Moons

Mars Rover Opportunity Working at Edge of 'Solander'


SATURN DAILY
NASA Prepares for First Virginia Coast Launch to Moon

NASA Selects Launch Services Contract for OSIRIS-REx Mission

Environmental Controls Move Beyond Earth


SATURN DAILY
Gravitational tide the secret of Saturn's weird moon

Mystery of the Missing Waves on Titan

Revealed - the mystery of the gigantic storm on Saturn


SATURN DAILY
China launches three experimental satellites

Medical quarantine over for Shenzhou-10 astronauts

China's astronauts ready for longer missions

SATURN DAILY

Cassini Gets Close-Up Views of Large Hurricane on Saturn
NASA's Cassini spacecraft has provided scientists the first close-up, visible-light views of a behemoth hurricane swirling around Saturn's north pole. In high-resolution pictures and video, sc ... more
SATURN DAILY

Saturn's youthful appearance explained
As planets age they become darker and cooler. Saturn however is much brighter than expected for a planet of its age - a question that has puzzled scientists since the late sixties. New research publ ... more
ROCKET SCIENCE

Apollo-Era Test Stand Being Prepared for SLS Core Stage Testing
Before NASA's new Space Launch System (SLS) flies to space on its inaugural mission in 2017, it will fly in place at the agency's Stennis Space Center in Mississippi. The B-2 Test Stand at Ste ... more
SATURN DAILY

Spacecraft returns dramatic images of massive hurricane on Saturn
NASA says the Cassini spacecraft has sent back the first close-up, visible-light views of a behemoth hurricane swirling around Saturn's north pole. ... more
24/7 Energy News Coverage
Software enables robots to be controlled in virtual reality

Laser-boron fusion now 'leading contender' for energy

Scientists develop new mode of energy generation from bituminous coal

Sustainable dams - are they possible

Britain seeks closer ties to China's Belt and Road

Single-photon detector can count to 4

Discovery sets new world standard in nano generators

SATURN DAILY

NASA Probe Observes Meteors Colliding with Saturn's Rings

IRON AND ICE

Herschel links water in Jupiter's stratosphere to 1994 comet impact

SATURN DAILY

Titan's Methane: Going, Going, Soon to Be Gone?

SATURN DAILY

Ice Cloud Heralds Fall at Titan's South Pole

SATURN DAILY

Blame it on the Rain (from Saturn's Rings)

SATURN DAILY

NASA Team Investigates Complex Chemistry At Titan

STELLAR CHEMISTRY

Sun block for the "Big Dog"

SATURN DAILY

Saturn is Like an Antiques Shop, Cassini Suggests

SATURN DAILY

'Hot Spots' Ride a Merry-Go-Round on Jupiter

SATURN DAILY

Rhea Rev 183 Raw Preview

Cassini Makes Last Close Flyby of Saturnian Moon Rhea

Cassini Spies Bright Venus From Saturn Orbit

Modeling Jupiter and Saturn's possible origins

A Window into Europa's Ocean Right at the Surface

Cassini Still Going Strong Investigating Saturn's Moons

Cassini Sheds Light On Cosmic Particle Accelerators

Cassini Sees Titan Cooking up Smog

NASA's Cassini Watches Storm Choke on Its Own Tail

NASA Engineers Resurrect And Test Mighty F-1 Engine Gas Generator

Titan Gets a Dune "Makeover"

NASA Engineers Resurrect And Test Mighty F-1 Engine Gas Generator

Cassini Suggests Icing On A Lake

Frozen hydrocarbon ice on Titan's oceans?

Cassini Instrument Learns New Tricks

Saturn's Transit of Venus on Dec. 21, 2012

From Cassini for the Holidays: A Splendor Seldom Seen

Cassini Spots Mini Nile River on Saturn Moon

Titan, Saturn's Largest Moon, Icier than Scientists Thought

NASA's Cassini Sees Abrupt Turn in Titan's Atmosphere

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