SG Talk

Record-Breaking Voyager Spacecraft Begin to Power Down 

https://www.scientificamerican.com/artic...1655385045

(28-08-2022, 10:26 PM)Teeth53 Wrote: [ -> ]Record-Breaking Voyager Spacecraft Begin to Power Down 

https://www.scientificamerican.com/artic...1655385045

.......

https://youtu.be/QWdISsdBzg8 😘 ....https://youtu.be/QWdISsdBzg8

Space is very scary

Dun get caught up with media hype

Into space.......
https://youtu.be/wdP_UDSsuro

Allen Telescope Array (ATA), a recently refurbished radio observatory near San Francisco in California dedicated to the search for extraterrestrial life, made contact with the Voyager 1 probe on July 9, using 20 of its 42 dish antennas, which are each over 20 feet (6.1 meters) wide. The telescope recorded 15 minutes of data,

https://www.space.com/voyager-1-signal-f...cope-array

(29-08-2022, 08:59 PM)Teeth53 Wrote: [ -> ]Allen Telescope Array (ATA), a recently refurbished radio observatory near San Francisco in California dedicated to the search for extraterrestrial life, made contact with the Voyager 1 probe on July 9, using 20 of its 42 dish antennas, which are each over 20 feet (6.1 meters) wide. The telescope recorded 15 minutes of data,

https://www.space.com/voyager-1-signal-f...cope-array

NOW new....Signals...

(30-08-2022, 03:38 PM)Teeth53 Wrote: [ -> ]NOW new....Signals...

Identifying the Oort Cloud


In 1950, Dutch astronomer Jan Oort suggested that some of the comets entering the solar system come from a cloud of icy bodies that may lie as far as 100,000 times Earth's distance from the sun, a distance of up to 9.3 trillion miles (15 trillion kilometers).

Two types of comets travel through the solar system. Those with short periods, on the order of a few hundred years, stem from the Kuiper Belt, a pancake of icy particles near the orbit of Pluto. Longer period comets, with orbits of thousands of years, come from the more distant Oort Cloud.

The two regions vary primarily in terms of distance and location. The Kuiper Belt orbits in approximately the same plane as the planets, ranging from 30 to 50 times as far from the sun as Earth. But the Oort Cloud is a shell that surrounds the entire solar system, and is a hundred times as distant.

Comets from the Oort Cloud can travel as far as three light-years from the sun. The farther they go, the weaker the sun's gravitational hold grows. Passing stars and clouds of molecular gas can easily change the orbit of these comets, stripping them from our sun or casting them back toward it. The path of the comets is constantly shifting, depending on what factors influence it.

(30-08-2022, 03:53 PM)Teeth53 Wrote: [ -> ]Identifying the Oort Cloud


In 1950, Dutch astronomer Jan Oort suggested that some of the comets entering the solar system come from a cloud of icy bodies that may lie as far as 100,000 times Earth's distance from the sun, a distance of up to 9.3 trillion miles (15 trillion kilometers).

Two types of comets travel through the solar system. Those with short periods, on the order of a few hundred years, stem from the Kuiper Belt, a pancake of icy particles near the orbit of Pluto. Longer period comets, with orbits of thousands of years, come from the more distant Oort Cloud.

The two regions vary primarily in terms of distance and location. The Kuiper Belt orbits in approximately the same plane as the planets, ranging from 30 to 50 times as far from the sun as Earth. But the Oort Cloud is a shell that surrounds the entire solar system, and is a hundred times as distant.

Comets from the Oort Cloud can travel as far as three light-years from the sun. The farther they go, the weaker the sun's gravitational hold grows. Passing stars and clouds of molecular gas can easily change the orbit of these comets, stripping them from our sun or casting them back toward it. The path of the comets is constantly shifting, depending on what factors influence it.

Oort Cloud inhabitants

The estimated 2 trillion objects in the Oort Cloud are primarily composed of ices of ammonia, methane, and water. Formed in the beginning of the solar system, the objects are pristine chunks of the cloud's early life, which means these comets provide insight into the environment in which the early Earth evolved. While gravity drew other bits of dust and ice together into larger celestial bodies, the residents of the Oort Cloud experienced a different outcome. Gravity from the other planets—primarily gas giants such as Jupiter — kicked them into the outer solar system, where they remain. [PHOTOS: Spectacular Comet Views from Earth and Space]

https://www.space.com/16401-oort-cloud-t...shell.html


The estimated 2 trillion objects in the Oort Cloud are primarily composed of ices of ammonia, methane, and water. Formed in the beginning of the solar system, the objects are pristine chunks of the cloud's early life, which means these comets provide insight into the environment in which the early Earth evolved. While gravity drew other bits of dust and ice together into larger celestial bodies, the residents of the Oort Cloud experienced a different outcome. Gravity from the other planets—primarily gas giants such as Jupiter — kicked them into the outer solar system, where they remain. [[size=11]PHOTOS: Spectacular Comet Views from Earth and Space][/size]

(30-08-2022, 03:38 PM)Teeth53 Wrote: [ -> ]NOW new....Signals...

The population of the Oort Cloud is in a constant state of flux. Not only are some of its residents permanently booted out of the system through interactions with passing neighbors, the sun may also capture the inhabitants from the revolving shells surrounding other stars.


The comet Hale-Bopp captured the attention of millions when it traveled in from the Oort Cloud to pass near the Earth before returning to its distant home.

The comet Hale-Bopp captured the attention of millions when it traveled in from the Oort Cloud to pass near the Earth before returning to its distant home. (Image credit: J. C. Casado)
When the comet Hyakutake passed within 9 million miles (15 million kilometers) of Earth in 1996, it was completing a journey of about 17,000 years from the distant reaches of the Oort Cloud. Hale-Bopp was another long-period comet that traveled in from the Oort Cloud. Visible for nearly a year and a half, it passed within 122 million miles (197 million km) of the Earth. Both of these Oort Cloud objects had their orbits drastically changed as a result of their pass through the solar system. Halley's Comet is also believed to have originally come from the Oort Cloud, although it is now a Kuiper Belt object.

Scientists have also identified several dwarf planets that they believe are part of this distant group. The largest is Sedna, which is thought to be three-quarters the size of Pluto. Sedna is 8 billion miles (13 billion km) away from Earth and orbits the sun approximately every 10,500 years.

Other objects include 2006 SQ372, 2008 KV42, 2000 CR105 and 2012 VP113, comets that range between 30 to 155 miles (50 to 250 km) in size. The newest addition to this crowd is 2015 TG387, nicknamed The Goblin, which was first described in research published in 2018.


Other Resources:

NASA's page on the Oort Cloud and the Kuiper Belt
Comets: Formation, Discovery, and Exploration
Kuiper Belt Objects

(30-08-2022, 03:38 PM)Teeth53 Wrote: [ -> ]NOW new....Signals...

https://www.space.com/20016-comet-hyakutake.html

On March 27, U.S. and German astrophysicists announced they had seen the first X-rays emitted from a comet.

"We had no clear expectation that comets shine in X-rays, but the opportunity to search for this radiation in a comet coming so close to the earth was too good to miss," stated Michael J. Mumma of NASA's Goddard Space Flight Center.

"Now we have our work cut out for us in explaining these data, but that's the kind of problem you love to have."

Two days later, a radar antenna at the NASA Goldstone Deep Space Communication Complex measured the size of the comet's nucleus, at an estimated less than two miles across.

The tail's size continued to surprise scientists after the comet made its closest approach to Earth. In May 1996,

✨️😂An instrument on the sun-pointing Ulysses spacecraft "suddenly went haywire" for several hours, according to an account in Physics World.

(28-08-2022, 10:26 PM)Teeth53 Wrote: [ -> ]Record-Breaking Voyager Spacecraft Begin to Power Down 

https://www.scientificamerican.com/artic...1655385045

Does In work....on space. 
https://youtu.be/W6WjiupbVHI

(30-08-2022, 04:43 PM)Teeth53 Wrote: [ -> ]https://www.space.com/20016-comet-hyakutake.html

On March 27, U.S. and German astrophysicists announced they had seen the first X-rays emitted from a comet.

"We had no clear expectation that comets shine in X-rays, but the opportunity to search for this radiation in a comet coming so close to the earth was too good to miss," stated Michael J. Mumma of NASA's Goddard Space Flight Center.

"Now we have our work cut out for us in explaining these data, but that's the kind of problem you love to have."

Two days later, a radar antenna at the NASA Goldstone Deep Space Communication Complex measured the size of the comet's nucleus, at an estimated less than two miles across.

The tail's size continued to surprise scientists after the comet made its closest approach to Earth. In May 1996,

✨️😂An instrument on the sun-pointing Ulysses spacecraft "suddenly went haywire" for several hours, according to an account in Physics World.

Yuji Hyakutake first spotted the comet in January 1996 using 25x150 binoculars. The amateur comet-hunter had quit his newspaper job in 1994 specifically to move to an area with less light pollution and dedicate more time to searching the skies......

(03-09-2022, 10:44 PM)Teeth53 Wrote: [ -> ]Does In work....on space. 
https://youtu.be/W6WjiupbVHI

NASA.....
https://youtu.be/HAb54DMrt0c

(28-08-2022, 05:36 PM)[[ForeverAlone]] Wrote: [ -> ]https://www.straitstimes.com/life/entert...olar-orbit

Returning humans to the moon, including landing the first woman and the first person of color at the lunar south pole, and preparing for human exploration of Mars and beyond

https://edition.cnn.com/2022/08/22/world...index.html