Astronomical News

eburacum

Papo-furado
Joined
Aug 26, 2005
Messages
3,481
Reaction score
1,522
Points
169
Remotely operated robots are probably going to be used a lot in the foreseeable future on the Moon, to build infrastructure, explore, prospect and mine. It might be decades before humans go there in any numbers, but when they do, there will already be a load of stuff there ready for them.
 

EnolaGaia

I knew the job was dangerous when I took it ...
Staff member
Joined
Jul 19, 2004
Messages
16,568
Reaction score
21,710
Points
309
Location
Out of Bounds
The recent visit by 'Oumuamua raised the question of how many other interstellar visitors were hanging out in our solar system, having been captured by our star's gravity. Astronomers have now assembled a list of 19 asteroids they suspect are "foreign."
Astronomers Just Identified 19 More Asteroids They Think Are Interstellar

The Solar System has been here for a long time. So, when 'Oumuamua was spotted in 2017, it was almost a dead cert it wasn't the only object from interstellar space to visit us over that 4.57 billion-year history. Then comet 2I/Borisov showed up last year. That basically clinched it.

But where are the rest of our interstellar visitors? We'll probably find a few more flying in from the wilds in the coming years. And, according to new research, a whole bunch of interstellar asteroids have been hanging out right here in the Solar System for a very long time.

Based on how they move around the Sun, a team of researchers has identified 19 asteroids they think were captured from another star, way back when the Solar System was just a few million years old. ...
FULL STORY: https://www.sciencealert.com/astron...19-more-asteroids-they-think-are-interstellar
 

Comfortably Numb

Antediluvian
Joined
Aug 7, 2018
Messages
5,429
Reaction score
8,462
Points
279
Location
Phone
THE LAWS OF PHYSICS MAY BREAK DOWN AT THE EDGE OF THE UNIVERSE

A controversial new study suggests that it may be possible to bend the laws of the universe — but just a little bit.

Source: futurism.com
Date: 27 April, 2020

Scientists at the University of New South Wales found what seem to be discrepancies in what’s called the fine structure constant, a number that’s thought to remain perfectly unchanging and describes how subatomic particles interact with each other. It’s a bold claim, but if it holds up it would fundamentally alter our understanding of the universe.

The fine structure constant describes the force that influences subatomic particles with electrical charge, like how protons and electrons within an atom are drawn to one another. The study, published Friday in the journal Science Advances, found that the number seemed to change when they analyzed extremely distant quasars — but only when they looked in certain directions, meaning that the laws of physics may break down at the edges of the universe.

“And it seems to be supporting this idea that there could be a directionality in the universe,” University of New South Wales physicist John Webb said in a press release, “which is very weird indeed.”

https://futurism.com/the-byte/laws-physics-break-down-edge-universe
 

Comfortably Numb

Antediluvian
Joined
Aug 7, 2018
Messages
5,429
Reaction score
8,462
Points
279
Location
Phone
The weight of the Universe

Bochum cosmologists headed by Professor Hendrik Hildebrandt have gained new insights into the density and structure of matter in the Universe.

Source: heritagedaily.com
Date: 28 April, 2020

Several years ago, Hildebrandt had already been involved in a research consortium that had pointed out discrepancies in the data between different groups. The values determined for matter density and structure differed depending on the measurement method. A new analysis, which included additional infrared data, made the differences stand out even more. They could indicate that this is the flaw in the Standard Model of Cosmology.

Rubin, the science magazine of Ruhr-Universität Bochum, has published a report on Hendrik Hildebrandt’s research. The latest analysis of the research consortium, called Kilo-Degree Survey, was published in the journal Astronomy and Astrophysics in January 2020.

https://www.heritagedaily.com/2020/04/the-weight-of-the-universe/128041
 

Comfortably Numb

Antediluvian
Joined
Aug 7, 2018
Messages
5,429
Reaction score
8,462
Points
279
Location
Phone
‘Elegant’ solution reveals how the universe got its structure

Source: heritagedaily.com
Date: 27 April, 2020

The universe is full of billions of galaxies–but their distribution across space is far from uniform. Why do we see so much structure in the universe today and how did it all form and grow?

A 10-year survey of tens of thousands of galaxies made using the Magellan Baade Telescope at Carnegie’s Las Campanas Observatory in Chile provided a new approach to answering this fundamental mystery. The results, led by Carnegie’s Daniel Kelson, are published in Monthly Notices of the Royal Astronomical Society.

“How do you describe the indescribable?” asks Kelson. “By taking an entirely new approach to the problem.”

“Our tactic provides new–and intuitive–insights into how gravity drove the growth of structure from the universe’s earliest times,” said co-author Andrew Benson. “This is a direct, observation-based test of one of the pillars of cosmology.”

https://www.heritagedaily.com/2020/...als-how-the-universe-got-its-structure/128013
 

Comfortably Numb

Antediluvian
Joined
Aug 7, 2018
Messages
5,429
Reaction score
8,462
Points
279
Location
Phone
Longstanding mystery of matter and antimatter may be solved

Source: phys.org
Date: 19 May, 2020

An element which could hold the key to the long-standing mystery around why there is much more matter than antimatter in our Universe has been discovered by a University of the West of Scotland (UWS)-led team of physicists.

The UWS and University of Strathclyde academics have discovered, in research published in the journal Nature Physics, that one of the isotopes of the element thorium possesses the most pear-shaped nucleus yet to be discovered. Nuclei similar to thorium-228 may now be able to be used to perform new tests to try find the answer to the mystery surrounding matter and antimatter.

UWS's Dr. David O'Donnell, who led the project, said: "Our research shows that, with good ideas, world-leading nuclear physics experiments can be performed in university laboratories.

"This work augments the experiments which nuclear physicists at UWS are leading at large experimental facilities around the world. Being able to perform experiments like this one provides excellent training for our students."

https://www.phys.org/news/2020-05-longstanding-mystery-antimatter.amp
 

Comfortably Numb

Antediluvian
Joined
Aug 7, 2018
Messages
5,429
Reaction score
8,462
Points
279
Location
Phone
Massive disk galaxy could change our understanding of how galaxies are born

Source: livescience.com
Date: 21 May, 2020

A massive, rotating disk galaxy that first formed just 1.5 billion years after the Big Bang, could upend our understanding of galaxy formation, scientists suggest in a new study.

In traditional galaxy formation models and according to modern cosmology, galaxies are built beginning with dark-matter halos. Over time, those halos pull in gases and material, eventually building up full-fledged galaxies. Disk galaxies, like our own Milky Way, form with prominent disks of stars and gas and are thought to be created in a method known as "hot mode" galaxy formation, where gas falls inward toward the galaxy's central region where it then cools and condenses.

This process is thought to be fairly gradual, taking a long time. But the newly discovered galaxy DLA0817g, nicknamed the "Wolfe Disk," which scientists believe formed in the early universe, suggests that disk galaxies could actually form quite quickly.

In a new study led by Marcel Neeleman of the Max Planck Institute for Astronomy in Germany, researchers spotted the Wolfe Disk using ALMA, the Atacama Large Millimeter/submillimeter Array in Chile. They found out that the object was a large, stable rotating disk, clocking in at a whopping 70 billion times the mass of our sun.

[...]

https://www.livescience.com/wolfe-disk-massive-galaxy-discovery.html


"...70 billion times the mass of our sun".

Contemplated cross-posting to, 'Things That Make You Go...WTF?'.
 

Vardoger

YOLO
Joined
Jun 3, 2004
Messages
5,435
Reaction score
4,335
Points
259
Location
Scandinavia
SpaceX first attempt at launching astronauts to International Space Station is expected to happen at 20:33 UTC.
The instantaneous launch window opens at 4:33 p.m. EDT, or 20:33 UTC, with backup instantaneous launch opportunities available on Saturday, May 30 at 3:22 p.m. EDT, or 19:22 UTC, and on Sunday, May 31 at 3:00 p.m. EDT, or 19:00 UTC. Tune in here to watch the launch webcast. Coverage will begin about 4 hours before liftoff.
Live video:

More info from NASA here.
 
Last edited:

Vardoger

YOLO
Joined
Jun 3, 2004
Messages
5,435
Reaction score
4,335
Points
259
Location
Scandinavia
New countdown for new launch of SpaceX rocket to ISS. The last one was cancelled because of weather.


After standing down from launch on Wednesday May 27, SpaceX is now targeting Saturday, May 30 for Falcon 9’s launch of Crew Dragon’s second demonstration (Demo-2) mission from Launch Complex 39A (LC-39A) at NASA’s Kennedy Space Center in Florida. This test flight with NASA astronauts Bob Behnken and Doug Hurley on board the Dragon spacecraft will return human spaceflight to the United States.

The instantaneous launch window opens at 3:22 p.m. EDT, or 19:22 UTC, with a backup instantaneous launch opportunity available on Sunday, May 31 at 3:00 p.m. EDT, or 19:00 UTC. Tune in here to watch the launch webcast. Coverage will begin about 4 hours before liftoff.

Demo-2 is the final major test for SpaceX’s human spaceflight system to be certified by NASA for operational crew missions to and from the International Space Station. SpaceX is returning human spaceflight to the United States with one of the safest, most advanced systems ever built, and NASA’s Commercial Crew Program is a turning point for America’s future in space exploration that lays the groundwork for future missions to the Moon, Mars, and beyond.
 
Top