Did Voyager 1 Leave the Solar System or Not?
By Sarah Scoles | Discover
The thing about crossing into uncharted territory is that you may not know when, exactly, you have crossed into it. No one needs to tell that to the Voyager 1 spacecraft, which is currently at the center of a controversy about where the solar system ends and interstellar space begins.
Today, a press release from the American Geophysical Union initially stated Voyager had left our solar system. Two hours later, though, they issued a correction calling Voyager’s current location a “new region of space,” which is considerably less flashy (but equally scientifically valuable). The NASA Jet Propulsion Laboratory, which oversees the spacecraft, weighed in with a press release saying that no, in fact Voyager was still in the solar system.
So why the controversy? What is the debate about the boundary of the solar system? And what is this “new region” of which the scientists speak?
Let’s begin at the beginning. NASA launched Voyager 1 in 1977. Since then, the 1,600-pound (722 kilogram) probe has been zipping away from Earth and toward the edge of the solar system. It is currently more than 11 billion miles from the Sun, which is nearly three times as far out as Pluto is (don’t worry, Pluto; Voyager isn’t a planet, either).
But moving 11 billion miles from home isn’t always enough to free you of its influence. In the case of the solar system, the region where the Sun’s influence dominates is known as the heliosphere. Here, the Sun has blown high-speed, charged pieces of itself into a womb-like bubble.
Since 2004, Voyager 1 has been traveling in a subsection of the outer heliosphere: the heliosheath, where the solar wind slows down in response to pressure from the interstellar medium, which is the combination of winds from other, distant stars. When the influence of the solar wind and the interstellar medium are equal, the solar system ends, or so we say, and actual interstellar space begins. But determining whether or not Voyager has arrived there is no simple task.
Read the full article at: discovermagazine.com
What Is on Voyager’s Golden Record?
The Voyager Golden Record
The Secret Messages NASA Sent to Aliens
Latest News from our Front Page
Norwegian school brutally kicks out students, reopens as immigration center
A failing Norwegian school has brutally kicked out all of the students living there with just a few days notice to find somewhere else to live and study. It has now reopened as a reception center for immigrants.
The school, called Waldorf, is in the RÃ¸yken municipality of Buskerud County. It had been failing for sometime, and was officially declared bankrupt ...
Why not hear about Islam from a woman who grew up as Muslim in the ME?
Youtube description: She says: "I have reached a boiling point with these lies about Islam! Please share it, don't let me waste my breath....go to voxpopulinews.net for a translation of the ISIS website along with other great articles and podcasts!"
Funniest Moments of Illegal Migrants
- Beginner picture: Macedonia
- Disastrous migrant: Hungary-Serbia border (Serbian side)
- Grateful migrants: Hungary (Budapest)
- Border Control: Austria (Slovenian border)
- Migrant actor: Hungary-Serbia border (Serbian side)
- Intelligent migrants: Hungary-Serbia border (Hungarian arie) (The fence was built from the border 2,5meters, in Hungarian area)
- Idiot migrant: Hungary (Bicske)
Pew: 65% say the news media has a 'negative effect' on America
More than six in 10 Americans believe that the news media, followed closely by Hollywood, has a negative effect on the country, according to a new survey.
An extensive new Pew Research Center survey finds that 65 percent believe that the news media "has a negative effect on the way things are going in the country." Some 56 percent said the ...
Hostage situation reported in N. France, several suffer 'gunshot wounds''
A hostage situation has been reported in the northern French town of Roubaix near the Belgian border. Several people have sustained gunshot wounds, Reuters reported citing medical sources.
The area has been cordoned off by police, RTL reported, adding that gunfire can be heard.
La Voix du Nord newspaper says the hostage takers are armed with Kalashnikovs. Witnesses told the daily that ...
|More News » |