BEST ASTRONOMY

Space / Astronomy News and Articles

Fri07282017

Last update01:23:23 PM GMT

Uranus

When Jupiter was in the position of Mars

— A new scenario describing a key step in the formation of the solar system has been proposed by a French-American collaboration including researchers from CNRS and Nice and Bordeaux 1 (1) universities. According to this model, Jupiter migrated towards the Sun to the position where Mars is today before beginning its outward migration to its current location, much further away. This is how the researchers explain the ...

— A new scenario describing a key step in the formation of the solar system has been proposed by a French-American collaboration including researchers from CNRS and Nice and Bordeaux 1 (1) universities. According to this model, Jupiter migrated towards the Sun to the position where Mars is today before beginning its...

Huge Spring Storms Rouse Uranus From Winter Hibernation

— If springtime on Earth were anything like it will be on Uranus, we would be experiencing waves of massive storms, each one covering the country from Kansas to New York, with temperatures of 300 degrees below zero.

A dramatic new time-lapse movie by NASA's Hubble Space Telescope shows for the first time seasonal changes on the planet. Once considered one of the blander-looking planets, Uranus is now...

— If springtime on Earth were anything like it will be on Uranus, we...

Two New Moons Of Uranus Discovered

— A team of astronomers has discovered two distant moons orbiting around the planet Uranus.

"This discovery is significant because Uranus was the only giant planet without distant moons on irregular orbits," says Brett Gladman of the Canadian Institute for Theoretical Astrophysics at the University of Toronto and the lead investigator on the team that made the discovery.

Other members of Gladman's team of...

— A team of astronomers has discovered two distant moons orbiting around the...

Voyager probes set to enter interstellar space

— More than 30 years after they left Earth, NASA's twin Voyager probes are now at the edge of the solar system. Not only that, they're still working. And with each passing day they are beaming back a message that, to scientists, is both unsettling and thrilling.

The message is, "Expect the unexpected."

"It's uncanny," says Ed Stone of the California Institute of Technology in Pasadena, Voyager Project Scientist since...

— More than 30 years after they left Earth, NASA's twin Voyager...

Deep Interior Of Neptune, Uranus And Earth May Contain Some Solid Ice

— The deep interior of Neptune, Uranus and Earth may contain some solid ice.

Through first-principle molecular dynamics simulations, Lawrence Livermore National Laboratory scientists, together with University of California, Davis collaborators, used a two-phase approach to determine the melting temperature of ice VII (a high-pressure phase of ice) in pressures ranging from 100,000 to 500,000 atmospheres.

For pressures...

— The deep interior of Neptune, Uranus and Earth may contain some...

On The Edge Of The Sun's Bubble: Spacecraft Gives Data On Space Beyond Sun's Influence

BestAstronomy (July 8, 2008) — The Voyager 1 and 2 spacecraft have traveled beyond the edges of the bubble in space where the sun's constant outward wind of particles and radiation slams into the interstellar medium that pervades our galaxy. The first scientific reports on what the Voyagers found there appeared recently in the journal Nature.

The deep-space probes, which were designed mainly to study the outer planets Jupiter, Saturn, Uranus and Neptune, have now traveled more...

Voyager Squashes View Of Solar System

— Scientists using data from NASA's Voyager 2 spacecraft have observed the bubble of solar wind surrounding the solar system is not round, but has a squashed shape, according to recent data published as part of a series of papers in Nature the week of July 3.

The beginning of the transition zone between the heliosphere (the solar wind bubble) and the rest of interstellar space is known as the 'termination shock'....

— Scientists using data from NASA's Voyager 2 spacecraft have observed...

Ringed Moon Circles Ringed Planet: Saturn's Moon Rhea Also May Have Rings

BestAstronomy (Mar. 6, 2008) — NASA's Cassini spacecraft has found evidence of material orbiting Rhea, Saturn's second largest moon. This is the first time rings may have been found around a moon.

A broad debris disk and at least one ring appear to have been detected by a suite of six instruments on Cassini specifically designed to study the atmospheres and particles around Saturn and its moons.

"Until now, only planets were known to have rings, but now Rhea seems to have...

When Worlds Collide: Have Astronomers Observed The Aftermath Of A Distant Planetary Collision?

BestAstronomy (Jan. 12, 2008) — Astronomers have announced that a mystery object orbiting a star 170 light-years from Earth might have formed from the collision and merger of two protoplanets. The object, known as 2M1207B, has puzzled astronomers since its discovery because it seems to fall outside the spectrum of physical possibility. Its temperature, luminosity, age, and location do not match up with any theory.

"This is a strange enough object that it needs a strange...

Solving Solar System Quandaries Is Simple: Just Flip-flop The Position Of Uranus And Neptune

— Quick: What's the order of the planets in the solar system? Need a little help? Maybe the following mnemonic rings a bell: "My Very Educated Mother Just Served Up Nine Pizzas." It's useful for remembering the order of the planets today, but it wouldn't have been as useful in the past, and not just because the International Astronomical Union demoted Pluto to "dwarf planet" last year. The reason this mnemonic ...

— Quick: What's the order of the planets in the solar system? Need a...

Astronomers Get First Look At Uranus's Rings As They Swing Edge-on To Earth

— As the rings of Uranus swing edge-on to Earth - a short-lived view we get only once every 42 years - astronomers observing the event are getting an unprecedented, glare-free view of the rings and the fine dust that permeates them.

The rings were discovered in 1977, so this is the first opportunity astronomers have had to observe a Uranus ring crossing and perhaps to discover a new moon or two.

While the Keck II...

— As the rings of Uranus swing edge-on to Earth - a short-lived view...

Diamonds Unlikely In Gas Giants Like Uranus

— A new study finds that diamonds probably don't crystallize in the atmospheres of planets such as Uranus and Neptune. The conclusion is contrary to recent speculation that small diamonds would spontaneously form in carbon rich layers of the gas giant planets. White dwarf stars, according to the study, are veritable diamond factories.

Physicists at the Universtiet van Amsterdam and the FOM Institute for Atomic and...

— A new study finds that diamonds probably don't crystallize in the...

Computer Models Suggest Planetary And Extrasolar Planet Atmospheres

— The world is abuzz with the discovery of an extrasolar, Earth-like planet around the star Gliese 581 that is relatively close to our Earth at 20 light years away in the constellation Libra.

Bruce Fegley, Jr., Ph.D., professor of earth and planetary sciences in Arts & Sciences at Washington University in St. Louis, has worked on computer models that can provide hints to what comprises the atmosphere of such...

— The world is abuzz with the discovery of an extrasolar, Earth-like...

Astronomers View First Mutual Event For Uranus: One Satellite Passes In Front Of Another

— An international team of astronomers led by Apostolos Christou at Armagh Observatory has made the first ever observation of one of the satellites of the planet Uranus passing in front of another. The observation was made on the night of 4th May by Marton Hidas and Tim Brown, of the Las Cumbres Observatory Global Telescope, Santa Barbara, California, using the robotic Faulkes Telescope South at Siding Spring ...

— An international team of astronomers led by Apostolos Christou at Armagh...

Astronomers Detect Shadow Of Water World In Front Of Nearby Star

— A team of European astronomers led by Michaël Gillon, a researcher from Liege University, has measured the transit of a Neptune-sized planet around another star. For the first time, the size and density of such a small extra-solar planet has been measured, showing that this planet is made up mainly of water.

The star GJ 436, a diminutive star (red dwarf) 30 light-years from the Sun, was known since 2004 to harbour a...

— A team of European astronomers led by Michaël Gillon, a...

Hubble Discovers Dark Cloud In The Atmosphere Of Uranus

— Just as we near the end of the hurricane season in the Atlantic Ocean, winds whirl and clouds churn 2 billion miles away in the atmosphere of Uranus, forming a dark vortex large enough to engulf two-thirds of the United States.

Lawrence Sromovsky of the University of Wisconsin-Madison leads a team that used NASA's Hubble Space Telescope to take the first definitive images of a dark spot on Uranus. The elongated...

— Just as we near the end of the hurricane season in the Atlantic...

Hubble Captures A Rare Eclipse On Uranus

— A new Hubble Space Telescope image shows a never-before-seen astronomical alignment of a moon traversing the face of Uranus, and its accompanying shadow. The white dot near the center of Uranus’ blue-green disk is the icy moon Ariel. The 700-mile-diameter satellite is casting a shadow onto the cloud tops of Uranus. To an observer on Uranus, this would appear as a solar eclipse, where the moon briefly blocks out the S...

— A new Hubble Space Telescope image shows a never-before-seen...

Blue Ring Discovered Around Uranus

— The outermost ring of Uranus, discovered just last year, is bright blue, making it only the second known blue ring in the solar system, according to a report this week in the journal Science.

Perhaps not coincidentally, both blue rings are associated with small moons.

"The outer ring of Saturn is blue and has Enceladus right smack at its brightest spot, and Uranus is strikingly similar, with its blue ring right on top...

— The outermost ring of Uranus, discovered just last year, is...

NASA's Hubble Discovers New Rings And Moons Around Uranus

— NASA's Hubble Space Telescope photographed a new pair of rings around Uranus and two new, small moons orbiting the planet.

The largest ring is twice the diameter of the planet's previously known rings. The rings are so far from the planet, they are being called Uranus's "second ring system." One of the new moons shares its orbit with one of the rings. Analysis of the Hubble data also reveals the orbits of Uranus's...

— NASA's Hubble Space Telescope photographed a new pair of rings...

Rings Around The Planets: Recycling Of Material May Extend Ring Lifetimes

— Although rings around planets like Jupiter, Saturn, Uranus and Neptune are relatively short-lived, new evidence implies that the recycling of orbiting debris can lengthen the lifetime of such rings, according to University of Colorado researchers.

Strong evidence now implies small moons near the giant planets like Saturn and Jupiter are essentially piles of rubble, said Larry Esposito, a professor at CU-Boulder's...

— Although rings around planets like Jupiter, Saturn, Uranus and...

Keck Telescope Images Of Uranus Reveal Ring, Atmospheric Fireworks

— As summer draws to a close in the southern hemisphere of Uranus, storm clouds are brewing in the upper atmosphere, northern hemisphere winds are gusting to 250 miles per hour, and the planet's rings are getting brighter every day.

This weather report comes from researchers using the Keck II 10-meter telescope atop Mauna Kea volcano in Hawaii, where recent observations are proving that Uranus is not the "boring and...

— As summer draws to a close in the southern hemisphere of Uranus...