Voyager 2 Illuminates The Boundary of Interstellar Space

"Without this new data from Voyager 2, we wouldn't know if what we were seeing with Voyager 1 was characteristic of the entire heliosphere or specific just to the location and time when it crossed". Here are the five biggest takeaways. (The plasma outside is still colder than the plasma inside.) Voyager 2 also observed a slight increase in plasma density just before it exited the heliosphere, indicating that the plasma is compressed around the inside edge of the bubble.

Researchers from the University of Iowa have been carrying out this research. The changes confirmed that the probe had entered a new region of space.

Before the Voyager missions, scientists predicted that the solar bubble just sort of dissolved into interstellar space as you ventured farther and farther from the sun.

When Voyager 2 exited the heliosphere a year ago, scientists announced that its two energetic particle detectors noticed dramatic changes: The rate of heliospheric particles detected by the instruments plummeted, while the rate of cosmic rays (which typically have higher energies than the heliospheric particles) increased dramatically and remained high. The heliosphere is 11 billion miles from Earth, which is well beyond Pluto's orbit.

The part of the heliopause where Voyager 2 passed was thinner and smoother than the spot where Voyager 1 left.

The researchers said evidence gathered by both probes show that the interstellar medium, along with the heliopause and the interstellar magnetic fields, "form a complex interconnected dynamical system". From the first Voyager-1 and now Voyager-2 we come to know that there remains a strong boundary.

"Think of a cold front that forms when a very cold air mass comes down to the US from Canada", said Don Gurnett, professor of physics at the University of Iowa.

"We also have galactic cosmic rays, which are out in the interstellar space trying to flow in", Stone said, referring to the high-energy atomic particles whizzing around the universe. A similar process regularly occurs between the Earth and Sun's magnetic field, so it would be no surprise to find the same thing happening between the Sun's (magnetic) field and the interstellar field.

Two Enugu Rangers players killed in road accident
According to the statement, the player died on Sunday after a fatal motor accident in the company of his colleagues. It was later confirmed that George's friend and Rangers teammate Emmanuel Ogbu also passed away in the collision.

Using data collected from the Low-Energy Charged Particle (LECP) instrument on Voyager 2, which is almost identical to that flown on Voyager 1, the team say that observations close to the heliopause show relatively large magnetic field magnitudes. Astronomers expected the direction of the magnetic field would be very different between the two.

But that does not mean they will disappear, said Bill Kurth, a researcher at the University of Iowa and co-author of the study focusing on plasma waves. Again, all this data taken together raises more questions than it can answer. Turns out the sun's impact goes beyond its own borders.

However, the width of the layer seen by Voyager 2 matches the width of a so-called stagnation region detected by Voyager 1. The probe has been traveling through interstellar space - even riding the momentum of interstellar shock waves - for several years now.

Not only that says Richardson, but the interstellar medium closest to the boundary is more variable and hotter than expected. The space between stars also contains cosmic rays.

"This is a very exciting time for us", Stone said.

The journey of the 42-year-old Voyager probe therefore provides rare new insights into the suburbs of our cosmic home. That material is undergoing natural decay.

That gives valuable clues to the structure of the heliosphere-the bubble, shaped much like a wind sock, created by the sun's wind as it extends to the boundary of the solar system. "In another five years or so, we may not have enough scientific instruments to power it any longer".

Both Voyager probes were only built to last 12 years. There are now no plans for a successor to the Voyager program (the only other spacecraft headed to such distances, New Horizons, will run out of power at 90 AU), but the success of the missions and the questions they raise will undoubtedly inspire these scientists and engineers to come up with new proposals to study the heliosphere and beyond.

Recommended News

  • Emirates to Suspend All Passenger Operations From March 25

    Emirates to Suspend All Passenger Operations From March 25

    Emirates is based in Dubai but the base functions mainly as a legally necessary intermediate stop for intercontinental flights. Junior level employees will be exempt from basic salary reduction. "We want to avoid cutting jobs", Sheikh Ahmed said.
    World death toll exceeds 13,000 as virus continues

    World death toll exceeds 13,000 as virus continues

    Almost all Italians have been told to stay at home. "We're going to have a great victory". Prime Minister Giuseppe Conte ordered people on Monday not to come out of their homes.
    Customers are unable to get their repaired iPhones from the Apple Store

    Customers are unable to get their repaired iPhones from the Apple Store

    When the disease raged in China, Apple set to shut down all sales and brick-and-mortirnya in the country, just open it back on 13. Businesses have also taken a hit with the reduction in manpower and closing of sites due to the spread of the virus.
  • Formula One set to announce another race postponement

    Formula One set to announce another race postponement

    If the schedule keeps up, you'll then watch You can check out the F1 esports coverage on the official channel or on the F1 website .

    Australia’s NSW State to Shut Down Non-Essential Services

    The Prime Minister also urged Australians to cancel all non-essential domestic travel and avoid travelling around the country. Outdoor gatherings are capped at 500 people, and indoor gatherings above 100 people are banned.
    Alibaba Group to donate emergency supplies to Nepal

    Alibaba Group to donate emergency supplies to Nepal

    Millions of face masks and coronavirus detection kits - donated by Chinese billionaire Jack Ma - arrived in Addis Ababa on Sunday (March 22) as the number of cases in Africa rose above 1,100.
  • World Health Organisation launches a WhatsApp coronavirus

    The World Health Organisation has launched a messaging service with partners WhatsApp and Facebook to keep people safe from coronavirus .
    Google's coronavirus search hub makes COVID-19 info easier to find

    Google's coronavirus search hub makes COVID-19 info easier to find

    Google emphasizes that it's pulling info from "authoritative" sources just like the World Health Organization and the CDC. There's also a statistics category that shows the number of confirmed cases, deaths and recoveries per country.
    Kentucky Sen. Rand Paul has tested positive for coronavirus

    Kentucky Sen. Rand Paul has tested positive for coronavirus

    Again, Rand Paul appears to be the very first of his colleagues on the Hill to have contracted coronavirus . Mitt Romney announced Sunday that he would self-quarantine after recently coming in contact with Paul.
  • Coronavirus Vaccine Will Be Found Up To One Year — WHO Official

    People under 50 comprise a significant number of people requiring hospitalisation, said Dr Tedros Adhanom Ghebreyesus, WHO director-general.
    Coronavirus: Global death toll climbs over 10,000

    Coronavirus: Global death toll climbs over 10,000

    The number of cases in the US has surged to at least 24,148, making it one of the worst hit countries in the world. China topped the number of confirmed cases with 81,199 infections, followed by Italy at 41,035.
    Baz Luhrmann halts production of film starring Tom Hanks

    Baz Luhrmann halts production of film starring Tom Hanks

    Good News: One week after testing Positive , in self-isolation, the symptoms are much the same . "No fever however the blahs. During their stay in Australia, the 63-year-old actor and Wilson were diagnosed by doctors to have COVID-19.

We are pleased to provide this opportunity to share information, experiences and observations about what's in the news.
Some of the comments may be reprinted elsewhere in the site or in the newspaper.
Thank you for taking the time to offer your thoughts.