technology-news

Voyager 1 enters interstellar space

Washington, Sept. 13 : NASA's Voyager 1 spacecraft has officially become the first human-made object to travel into interstellar space.


Johns Hopkins University Applied Physics Laboratory's Stamatios (Tom) Krimigis, principal investigator for Voyager's Low-Energy Charged Particle (LECP) instrument, said Voyager is now leaving the solar bubble at an altitude of 11.3 billion miles.

Voyager 1 first detected the pressure of interstellar space on the heliosphere, the bubble of charged particles surrounding the Sun that reaches far beyond the outer planets, in 2004.

Scientists then ramped up their search for evidence of the spacecraft's interstellar arrival, knowing the data analysis and interpretation could take months or years. Until mid-2010, the intensity of particles originating from inside our solar system had been holding steady.

A coronal mass ejection - or a massive burst of solar wind and magnetic fields - that erupted from the Sun in March 2012 provided scientists with the data they needed.

When the material eventually arrived at Voyager 1's location 13 months later, in April 2013, the plasma around the spacecraft began to vibrate like a violin string. On April 9, Voyager 1's plasma wave instrument detected the movement.

The particular oscillations meant the spacecraft was bathed in plasma more than 40 times denser than what they had encountered in the outer layer of the heliosphere. Density of this sort is to be expected in interstellar space.

The plasma wave science team went back through its recent data and found an earlier, fainter set of oscillations in October to November of 2012.

The report on this has been published in the journal Science.

--ANI (Posted on 13-09-2013)

technology-news headlines

In a first, stem cells cloned from human skin

Bulletproof vests from stem cells?

App to protect your kids' privacy on social media

Watch out for muggers while wearing Google Glass

Moon to brighten up your night life?

Now a mobile apps for smart cooking

Genes decide why you can't tolerate pain

Plants that regulate sprouting tackle climate change well

Feeling hot? Make the clouds rain

Earth's extinction rate highly exaggerated: Study

Fingernails glow when you make a call!

Talk to your smart phone to unlock car!

Quick Links: Goa | Munnar | Pondicherry | Free Yearly Horoscope '2014

Comments

Your e-mail:


Your Full Name:


Type verification image:
verification image, type it in the box

Message:

Back to Top