Feedback/Notes

 

Latest Activity

Grinning Cat commented on Sydni Moser's group Coffee Break
""But I don't want to be a door-to-door salesman. I'm not a Jehovah's Witness,…"
45 minutes ago
Grinning Cat commented on Sydni Moser's group Coffee Break
"Thanks, Stephen, for the video; I'm starting to watch it now. Has it indeed become more…"
56 minutes ago
Mrs.B commented on Sydni Moser's group Coffee Break
"This is exhausting."
6 hours ago
Mrs.B commented on A Former Member's group Animal | Vegetable | Mineral | Fungus
"Good visuals."
7 hours ago
Stephen Brodie commented on A Former Member's group Animal | Vegetable | Mineral | Fungus
"Dinosaur Size Comparison 3D - Smallest to Biggest"
10 hours ago
Stephen Brodie commented on Sydni Moser's group Coffee Break
"Pedlars and Street Selling - Documentary, UK Bylaws have become a nightmare for street pedlars in…"
13 hours ago
Stephen Brodie commented on Sydni Moser's group Coffee Break
"Ian my friend and neighbour has just had his second jab of the Oxford AstraZeneca with no…"
13 hours ago
Loren Miller commented on Loren Miller's group Quote Of The Day
"Religious moderation is the product of secular knowledge and scriptural ignorance. -- Sam Harris,…"
15 hours ago
Chris B commented on Sydni Moser's group Coffee Break
"Thanks Ian! Sounds are still quite startling but interesting. I have lost the  higher pitch…"
18 hours ago
Ian Mason commented on Sydni Moser's group Coffee Break
"I was going to do some temping over the Summer but after a try-out I got turned down. It was…"
18 hours ago
Ian Mason commented on Sydni Moser's group Coffee Break
"I hope things go well, Chris. People tell me that they have to get used to hearing aids over time…"
18 hours ago
Chris B commented on Sydni Moser's group Coffee Break
"Thanks!"
18 hours ago
Mrs.B commented on Sydni Moser's group Coffee Break
"Oh you do need something good for a change! Let's hope this set works well."
19 hours ago
Chris B commented on Sydni Moser's group Coffee Break
"In the meantime I started my second trial period with hearing aids. This time it's a set with…"
19 hours ago
Mrs.B commented on Sydni Moser's group Coffee Break
"Well somebody needs to get on the ball. We got the Pfizer, & the only allergy mentioned was…"
19 hours ago
Chris B commented on Sydni Moser's group Coffee Break
"Sort of, but all the talk has made people insecure and unable to decide what to do. And all the…"
19 hours ago
Mrs.B commented on Sydni Moser's group Coffee Break
"Is there no plan in place at all?"
21 hours ago
Chris B commented on Sydni Moser's group Coffee Break
"Congrats on your first shots! Here it's still much talk and little action..."
21 hours ago
Mrs.B commented on Sydni Moser's group Coffee Break
"Thanks, Ian....seemed like a long wait."
yesterday
Ian Mason commented on Sydni Moser's group Coffee Break
"Congratulations, Mrs. B."
yesterday

We are a worldwide social network of freethinkers, atheists, agnostics and secular humanists.

Birthdays

Voyager 1 has left the solar system, says new study.

Voyager 1 appears to have at long last left our solar system and entered interstellar space, says a University of Maryland-led team of researchers.

"It's a somewhat controversial view, but we think Voyager has finally left the Solar System, and is truly beginning its travels through the Milky Way," says UMD research scientist Marc Swisdak, lead author of a new paper published online this week in The Astrophysical Journal Letters. Swisdak and fellow plasma physicists James F. Drake, also of the University of Maryland, and Merav Opher of Boston University have constructed a model of the outer edge of the Solar System that fits recent observations, both expected and unexpected.

Their model indicates Voyager 1 actually entered interstellar space a little more than a year ago, a finding directly counter to recent papers by NASA and other scientists suggesting the spacecraft was still in a fuzzily-defined transition zone between the Sun's sphere of influence and the rest of the galaxy.

But why the controversy?
At issue is what the boundary-crossing should look like to Earth-bound observers 11 billion miles (18 billion kilometres) away. The Sun's envelope, known as the heliosphere, is relatively well-understood as the region of space dominated by the magnetic field and charged particles emanating from our star. The heliopause transition zone is both of unknown structure and location. According to conventional wisdom, we'll know we've passed through this mysterious boundary when we stop seeing solar particles and start seeing galactic particles, and we also detect a change in the prevailing direction of the local magnetic field.

In a NASA statement, Ed Stone, Voyager project scientist and a professor of physics of the California Institute of Technology, says, in part, "Other models envision the interstellar magnetic field draped around our solar bubble and predict that the direction of the interstellar magnetic field is different from the solar magnetic field inside. By that interpretation, Voyager 1 would still be inside our solar bubble. The fine-scale magnetic connection model [of Swisdak and colleagues] will become part of the discussion among scientists as they try to reconcile what may be happening on a fine scale with what happens on a larger scale."

Read the full article here.

Views: 124

Replies to This Discussion

This is also science at work.

Hubble Surprise: Shows Early-Universe Red Galaxies as Oddly Mature ...

"This is the only comprehensive study to date of the visual appearance of the large, massive galaxies that existed so far back in time," says co-author Arjen van der Wel of the Max Planck Institute for Astronomy in Heidelberg, Germany. "The galaxies look remarkably mature, which is not predicted by galaxy formation models to be the case that early on in the history of the Universe."

The Daily Galaxy has the full article.

RSS

© 2021   Created by Atheist Universe.   Powered by

Badges  |  Report an Issue  |  Privacy Policy  |  Terms of Service