|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
Sounds like sci-fi - 'Oumuamua Likely Had 2 Stars
On Monday, March 19, 2018 at 8:00:35 PM UTC-7, a425couple wrote:
1st Known Interstellar Visitor Gets Weirder: 'Oumuamua Likely Had 2 Stars By Mike Wall, Space.com Senior Writer | March 19, 2018 06:12pm ET 1st Known Interstellar Visitor Gets Weirder: 'Oumuamua Likely Had 2 Stars An artist's illustration of the asteroid 'Oumuamua, the first interstellar object ever known to visit our solar system. Credit: M. Kornmesser/European Southern Observatory Our solar system's first known interstellar visitor is likely even more alien than previously imagined, a new study suggests. The mysterious, needle-shaped object 'Oumuamua, which was spotted zooming through Earth's neighborhood last October, probably originated in a two-star system, according to the study. 'Oumuamua means "scout" in Hawaiian; the object was discovered by researchers using the Panoramic Survey Telescope and Rapid Response System (Pan-STARRS), at Haleakala Observatory on the island of Maui. ['Oumuamua: The 1st Interstellar Visitor in Photos] Astronomers could tell that the 1,300-foot-long (400 meters) 'Oumuamua wasn't from around here based on its hyperbolic orbit, which showed that the object wasn't gravitationally bound to the sun. Initially, scientists thought the body was probably a comet. But 'Oumuamua displayed no cometary activity — no long tail, no cloud-like "coma" around its core — even after getting relatively close to the sun, so it was soon reclassified as an asteroid. "It's really odd that the first object we would see from outside our system would be an asteroid, because a comet would be a lot easier to spot, and the solar system ejects many more comets than asteroids," study lead author Alan Jackson, a postdoctoral researcher at the Centre for Planetary Sciences at the University of Toronto Scarborough, said in a statement. But 'Oumuamua probably didn't come from a system like our own, according to the new study. Jackson and his colleagues performed computer-modeling work, which indicated that systems with two close-orbiting stars boot out asteroids much more efficiently than one-star systems do. And there are a lot of these binary systems out there; previous research has suggested that more than half of all Milky Way stars have close stellar companions. Nobody knows for sure where 'Oumuamua came from or how long it's been voyaging through deep space. But the odds are good that it was born into a binary system that harbors at least one big, hot star, according to the new study. That's because such systems are likely to have predominately rocky (as opposed to icy) bodies orbiting relatively close in, in the prime ejection zone. And 'Oumuamua was likely booted out during its natal system's planet-formation period, however long ago that may have been, Jackson and his team said. 'Oumuamua made its closest approach to Earth — about 15 million miles (24 million kilometers) — on Oct. 14. The object is now barreling toward the outer solar system and has been too distant and faint to study even with large telescopes since mid-December, NASA officials have said. But astronomers gathered a slew of data about 'Oumuamua while they could, and they will doubtless be mining this information for a long time to come. "The same way we use comets to better understand planet formation in our own solar system, maybe this curious object can tell us more about how planets form in other systems," Jackson said. The new study was published today (March 19) in the journal Monthly Notices of the Royal Astronomical Society. Follow Mike Wall on Twitter @michaeldwall and Google+. Follow us @Spacedotcom, Facebook or Google+. Originally published on Space.com. YOU'D ALSO LIKE How I Discovered the Origins of the Cigar-Shaped Alien 'Asteroid' 'Oumuamua Space Interstellar Object 'Oumuamua Could Be a Comet in Disguise Space 1st Known Interstellar Visitor Is Tumbling Out of Control: How Astronomers Know Space Meet 'Oumuamua! The 1st Interstellar Visitor Ever Seen Gets a Name Space https://www.space.com/40020-oumuamua...nary-star.html so come to California, you get citizenship by walking into anyone of our lovely DMVs. circa Brown's law 2003 AD |
#2
|
|||
|
|||
Sounds like sci-fi - 'Oumuamua Likely Had 2 Stars
On Monday, March 19, 2018 at 10:47:37 PM UTC-7, Michael wrote:
On Monday, March 19, 2018 at 8:00:35 PM UTC-7, a425couple wrote: 1st Known Interstellar Visitor Gets Weirder: 'Oumuamua Likely Had 2 Stars By Mike Wall, Space.com Senior Writer | March 19, 2018 06:12pm ET 1st Known Interstellar Visitor Gets Weirder: 'Oumuamua Likely Had 2 Stars An artist's illustration of the asteroid 'Oumuamua, the first interstellar object ever known to visit our solar system. Credit: M. Kornmesser/European Southern Observatory Our solar system's first known interstellar visitor is likely even more alien than previously imagined, a new study suggests. The mysterious, needle-shaped object 'Oumuamua, which was spotted zooming through Earth's neighborhood last October, probably originated in a two-star system, according to the study. 'Oumuamua means "scout" in Hawaiian; the object was discovered by researchers using the Panoramic Survey Telescope and Rapid Response System (Pan-STARRS), at Haleakala Observatory on the island of Maui. ['Oumuamua: The 1st Interstellar Visitor in Photos] Astronomers could tell that the 1,300-foot-long (400 meters) 'Oumuamua wasn't from around here based on its hyperbolic orbit, which showed that the object wasn't gravitationally bound to the sun. Initially, scientists thought the body was probably a comet. But 'Oumuamua displayed no cometary activity — no long tail, no cloud-like "coma" around its core — even after getting relatively close to the sun, so it was soon reclassified as an asteroid. "It's really odd that the first object we would see from outside our system would be an asteroid, because a comet would be a lot easier to spot, and the solar system ejects many more comets than asteroids," study lead author Alan Jackson, a postdoctoral researcher at the Centre for Planetary Sciences at the University of Toronto Scarborough, said in a statement. But 'Oumuamua probably didn't come from a system like our own, according to the new study. Jackson and his colleagues performed computer-modeling work, which indicated that systems with two close-orbiting stars boot out asteroids much more efficiently than one-star systems do. And there are a lot of these binary systems out there; previous research has suggested that more than half of all Milky Way stars have close stellar companions. Nobody knows for sure where 'Oumuamua came from or how long it's been voyaging through deep space. But the odds are good that it was born into a binary system that harbors at least one big, hot star, according to the new study. That's because such systems are likely to have predominately rocky (as opposed to icy) bodies orbiting relatively close in, in the prime ejection zone. And 'Oumuamua was likely booted out during its natal system's planet-formation period, however long ago that may have been, Jackson and his team said. 'Oumuamua made its closest approach to Earth — about 15 million miles (24 million kilometers) — on Oct. 14. The object is now barreling toward the outer solar system and has been too distant and faint to study even with large telescopes since mid-December, NASA officials have said. But astronomers gathered a slew of data about 'Oumuamua while they could, and they will doubtless be mining this information for a long time to come. "The same way we use comets to better understand planet formation in our own solar system, maybe this curious object can tell us more about how planets form in other systems," Jackson said. The new study was published today (March 19) in the journal Monthly Notices of the Royal Astronomical Society. Follow Mike Wall on Twitter @michaeldwall and Google+. Follow us @Spacedotcom, Facebook or Google+. Originally published on Space.com. YOU'D ALSO LIKE How I Discovered the Origins of the Cigar-Shaped Alien 'Asteroid' 'Oumuamua Space Interstellar Object 'Oumuamua Could Be a Comet in Disguise Space 1st Known Interstellar Visitor Is Tumbling Out of Control: How Astronomers Know Space Meet 'Oumuamua! The 1st Interstellar Visitor Ever Seen Gets a Name Space https://www.space.com/40020-oumuamua...nary-star.html so come to California, you get citizenship by walking into anyone of our lovely DMVs. circa Brown's law 2003 AD It is now called Mexicale.Best to speak Spanish.nice that places need not have to change the names.Bert |
#3
|
|||
|
|||
Sounds like sci-fi - 'Oumuamua Likely Had 2 Stars
The Racist Swine "reber G=EMC^2" wrote: "Anaheim is now called Mexicale.Best to speak Spanish. nice that places need not have to change the names" when and because SwineBert's Mexican pool-playing ex-cronies referred to Glazier as __ "la judio cerdo idioto" _, (the idiotic Jewish Pig).___ but, "I, Bert, found that out much too late, since... "reber" is a dirty 5 letter word, like "Troll", or like my name "Bert", which is a 4-letter word like "Turd" or "****" and my email address does anagram to ____ with which "I was setting a-bad-example" TreBert, but "My bar tab for Bud Light broke all records" Bert "I use Cocaine that is a wonder-drug for me". Bert. "I park & bark in the dark. I'm of low wit & a stupid ****." "I will do even more Drugs till the end of my time". Bert "If I get shot in back of my head. So What". Bert. "I feel very safe when I lie. OK, I will lie till I die". Bert "That is reality and it's a given. Go Figure" Trebert "I am all alone in my van with my bucket that I **** into" "Why am I not loved by all. I am very depressed". Bert "Being Jewish I know this is so very true. O ya" -- Bert. "Get the picture", "O ya", "I know why", "Go figure".. hmmm...snicker...chortle...ahahahAHAHA...ROTFL MAO |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
'Oumuamua | Mike_Duffy | Amateur Astronomy | 14 | December 5th 17 10:05 PM |
Oumuamua passes Earth | Hägar | Misc | 1 | November 28th 17 12:37 AM |
'Oumuamua | Richard D. Saam | Research | 3 | November 27th 17 10:08 PM |
The Sounds of Space ... | Hägar | Misc | 6 | November 3rd 13 05:30 PM |
... sounds ... | Twittering One | Misc | 0 | September 23rd 05 03:41 AM |