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  #961  
Old 03-22-18, 04:19 PM
lotr10 lotr10 is offline
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Quote:
Originally Posted by Zunardo View Post
It was bound to happen sooner or later:

https://www.space.com/40057-astronom...vers-mars.html
Ouch!
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  #962  
Old 03-22-18, 04:36 PM
lotr10 lotr10 is offline
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This is the first time I heard about this:

https://phys.org/news/2018-03-eviden...ory-solar.html

About 70,000 years ago, during human occupation of the planet, a small, reddish star approached our solar system and gravitationally disturbed comets and asteroids. Astronomers from the Complutense University of Madrid and the University of Cambridge have verified that the movement of some of these objects is still marked by that stellar encounter.



This sucker got pretty damn close to:

At a time when modern humans were beginning to leave Africa and the Neanderthals still thrived, Scholz's star—named after the German astronomer who discovered it—approached less than a light-year from the sun. Today, it is almost 20 light-years away, but 70,000 years ago, it entered the Oort cloud, a reservoir of trans-Neptunian objects located at the confines of the solar system.


I guess this is just a brutal reminder that the earth is just flotsam floating about in the slow motion maelstrom of our galaxy!
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  #963  
Old 03-25-18, 09:09 AM
lotr10 lotr10 is offline
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Here's some important information about what you can and can not do with that Chinese space station if it happens to hit the earth near you:

https://www.livescience.com/62112-wh...on-debris.html

China's defunct Tiangong-1 space station is careening through low-Earth orbit right now, and is expected to reenter Earth's atmosphere sometime between March 30and April 2. Most of the 9-ton(8,500 kilograms) space station will probably burn to bits in the atmosphere — but a few thousand chunks of hot, mangled debris are still likely to survive the trip and land on our planet's surface.

However, if by some truly cosmic coincidence you do find a piece of Tiangong-1 in your neighborhood — or if some debris washes up on a shore near you — here's some advice on your best course of action: Don't touch it.


Now here's some good but pretty obvious advise about why you shouldn't touch it:

Presumably, Pearlman said, the space station is carrying all manner of hazardous materials not safe for human contact, including fuel tanks with noxious fuel inside.

And here's some info that proves these folks aren't as smart as they pretend!

"Also, because this vehicle is going to be ripped apart by the process of reentry, whatever does survive to the ground could have very sharp edges," Pearlman added. "It’s not something you want to have your kids run out to touch."

Sharp edges! Seriously!

Also you can't keep it if you find it which sort of sucks:

"According to the Outer Space Treaty of 1967, a country’s spacecraft is their legal property until they say that it’s not their legal property,” Pearlman said. "No matter where it lands — whether it lands in the ocean and sinks to the bottom of the sea, or whether it lands on their own land or some other country’s land — it belongs to that country of origin."
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  #964  
Old 03-25-18, 03:42 PM
Zunardo Zunardo is offline
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This is impressive. I'm thinking this guy is a fan of the Andy Griffith made-for-TV movie "Salvage 1". I know I was.

https://www.independent.co.uk/news/w...-a8272761.html
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  #965  
Old 03-28-18, 08:56 AM
lotr10 lotr10 is offline
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Just a reminder that there are physiological as well as technological hurdles to get over in space flight:

https://nypost.com/2018/03/26/the-sh...he-human-body/

The article has a long list of the problems one can encounter in space as it reads like a trip to the nursing home to get an update on everybody's ailments. One thing that occurs to me is that a lot of these problems would be alleviated with bigger spacecraft and spin induced gravity.
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  #966  
Old 03-28-18, 07:41 PM
eastisbest eastisbest is offline
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So, if it lands on my house, I can sue.

Good deal.
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  #967  
Old 03-29-18, 08:12 AM
lotr10 lotr10 is offline
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Quote:
Originally Posted by eastisbest View Post
So, if it lands on my house, I can sue.

Good deal.
Just make sure you don't put any of the pieces up for sail on Craig's List!
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  #968  
Old 03-29-18, 04:33 PM
eastisbest eastisbest is offline
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Black market baby!!
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  #969  
Old 03-31-18, 06:42 AM
lotr10 lotr10 is offline
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For those of you who get lucky this weekend (with the Chinese space station hitting your property) here's another article advising you what to do:

https://www.space.com/40093-what-if-...on-debris.html

So, what should you do if you find a piece of what you think is space debris? "The best thing to do is to contact your local authorities," Pearlman said. "They will contact the federal authorities and arrange for the proper collection and appropriate return to the Chinese government."

Is it me or do all these articles read like they were written by the same people who write all those "when's the best time to take Social Security" financial articles? You know the ones that combine the obvious with no clear answer on what to do.
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  #970  
Old 03-31-18, 05:24 PM
BlackHawk BlackHawk is offline
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^^^Tiangong-1 should be back on Planet Earth in the next day or two. It's pretty small for a space station (19,000 pounds), but nobody has a clue where it might land with its uncontrolled reentry.

For comparison (from Wikipedia), Mir and Skylab were the two heaviest re-entering spacecraft:

Mir space station (Russia) ... 260,000 pounds ... controlled reentry in the south Pacific Ocean (2001).

Skylab space station (USA) ... 152,000 pounds ... partially controlled reentry in the south Pacific Ocean, with some debris landing in Western Australia (1979).

Something to look forward to in the future: International Space Station ... 925,000 pounds ... reentry should be no earlier than 2024 and possibly later than 2028. What goes up, must come down. Hopefully it will be in the "controlled" category.
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  #971  
Old 04-02-18, 08:02 AM
lotr10 lotr10 is offline
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It's over and surprise, the Chinese space station hit water!

http://www.dailymail.co.uk/news/arti...ere-hours.html

China's out of control Tiangong 1 space station smashed into Earth at 17,000mph off the coast of Tahiti on Monday morning and mostly disintegrated as it hit the planet's atmosphere.

Hopefully if any Yapsters were vacationing in Tahiti this week they can give us a full report!
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  #972  
Old 04-02-18, 11:25 AM
BlackHawk BlackHawk is offline
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^^^It's always the South Pacific Ocean.
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  #973  
Old 04-03-18, 07:38 AM
lotr10 lotr10 is offline
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Consider the source so I wouldn't get to excited but...............

https://www.dailystar.co.uk/news/wei...-warning-video

Space boffin Graham revealed to Daily Star Online exclusively that he has uncovered evidence suggesting that extraterrestrial beings will reveal themselves soon.

Of course all this would be a lot more credible if they could only find the focus knob on all their recording devices.
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  #974  
Old 04-03-18, 07:40 AM
lotr10 lotr10 is offline
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Getting back to science, this sounds very cool:

https://www.rt.com/usa/422954-nasa-r...cts-mars-bees/

The space agency says the machines, known as Marsbees, will be around the size of a bumblebee but have huge cicada-sized wings that will allow them to hover in the planet’s ultra-thin atmosphere. Proposed by a team from the University of Alabama (UA), the robo-bees will come fitted with sensors and wireless devices for mapping and scanning for signs of life.

It is hoped that Marsbees will replace rovers as primary vehicles for exploration and lead to the more detailed and extensive studies of Mars. While rovers currently operate on the surface of the planet, they move incredibly slowly. The Mars Curiosity Rover has moved just over 11 miles since landing on the planet’s surface in 2012. Under the Marsbees plan, a rover would only be necessary as a charging point for the robots.
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  #975  
Old 04-07-18, 08:23 AM
lotr10 lotr10 is offline
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Be sure to make your reservations early. At $9,500,000 for 12 days rooms are going to go fast on this new luxury hotel in space!

https://www.space.com/40226-aurora-s...el-photos.html

It's worth clicking on this link as there are some great pictures of what this new space hotel will look like.
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  #976  
Old 04-07-18, 03:54 PM
BlackHawk BlackHawk is offline
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Quote:
Originally Posted by lotr10 View Post
Be sure to make your reservations early. At $9,500,000 for 12 days rooms are going to go fast on this new luxury hotel in space!

https://www.space.com/40226-aurora-s...el-photos.html

It's worth clicking on this link as there are some great pictures of what this new space hotel will look like.
Price includes free HBO in every room and a complimentary continental breakfast.
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  #977  
Old 04-08-18, 11:16 AM
lotr10 lotr10 is offline
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Quote:
Originally Posted by BlackHawk View Post
Price includes free HBO in every room and a complimentary continental breakfast.
And a mint candy on every pillow!
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  #978  
Old 04-10-18, 01:16 PM
lotr10 lotr10 is offline
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Here's the latest development about that cigar shaped interstellar object that recently entered the solar system:

https://www.sciencedaily.com/release...0410100953.htm

A telescope in outback Western Australia has been used to listen to a mysterious cigar-shaped object that entered our Solar System late last year.

The unusual object -- known as 'Oumuamua -- came from another solar system, prompting speculation it could be an alien spacecraft.

So astronomers went back through observations from the Murchison Widefield Array (MWA) telescope to check for radio transmissions coming from the object between the frequencies of 72 and 102MHz -- similar to the frequency range in which FM radio is broadcast.


Okay so this thing is not broadcasting in FM! But honestly if it was an invading spacecraft designed to look like an asteroid would it be expected to be broadcasting ahead of the invasion?

Look I get that it's an odd shaped rock that's drifted into the solar system and not an invading space craft. But the comments being made by the scientists studying this thing leave a lot to be desired. They just seem a bit simple minded to me.
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  #979  
Old 04-11-18, 01:44 PM
Yappi Yappi is offline
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Tour of the Moon in 4K

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  #980  
Old 04-11-18, 03:40 PM
eastisbest eastisbest is offline
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Quote:
Originally Posted by lotr10 View Post
But honestly if it was an invading spacecraft designed to look like an asteroid would it be expected to be broadcasting ahead of the invasion?
I thought you called that "immigration?"

Maybe it was just stopping for gas? Looking for cheap women, or trees, or whatever it's preference? If we saw it, it's probabl old school. The equivalent of a "58" Chevy just out for a drive. Check out nearby drive-ins. Might be there.
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  #981  
Old 04-12-18, 08:14 AM
lotr10 lotr10 is offline
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Quote:
Originally Posted by Yappi View Post
Tour of the Moon in 4K


Very cool video, one of the best I've ever seen! Dark side of the moon baby!
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  #982  
Old 04-12-18, 08:15 AM
lotr10 lotr10 is offline
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Originally Posted by eastisbest View Post
I thought you called that "immigration?"
You forgot to add "illegal" before immigration east!
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  #983  
Old 04-12-18, 08:17 AM
lotr10 lotr10 is offline
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Politics isn't the only place with a partisan death battle going on:

https://www.popularmechanics.com/spa...k-blue-origin/

When it comes to space launches, there are two basic options for rocket fuel: solid and liquid. Solid rocket fuel is just that: a thick mix of fuel and oxidizer that is poured into a rocket booster, cooked to a pencil-eraser consistency, and set on fire during launch. The energy is directed through a nozzle, generating enough thrust to get a rocket into the air. Nuclear weapons in silos and submarines use these.

Liquid rocket engines feature tanks of fuel inside the boosters, one for fuel and another for oxidizer. The two substances, chilled to super-low temperatures so they don’t convert to gas, are mixed inside the engine at the time of launch, ignited, and routed through a nozzle. The result is a tongue of hot exhaust and thrust. This is the system that powers SpaceX’s rockets.

This is a clash of two different visions that are fighting for the future of spaceflight

Each fuel comes with pros and cons, and engineers can show you charts graphs of the various thrust profiles to illustrate each approach. But don’t let the seeming simplicity of the stats fool you: The schism between solid and liquid is a clash of two different visions that are fighting for the future of spaceflight.



Check this article out as it teaches you all you need to know (and then some) about these two propellants.
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  #984  
Old 04-12-18, 06:41 PM
BlackHawk BlackHawk is offline
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^^^Liquid vs. solid. Which one will get us to Mars?

It reminds me of the "war of the currents" from the 1880's-1890's: alternating current (AC) vs. direct current (DC). Westinghouse and Tesla vs. Edison.
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  #985  
Old 04-13-18, 06:37 AM
lotr10 lotr10 is offline
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Quote:
Originally Posted by BlackHawk View Post
^^^Liquid vs. solid. Which one will get us to Mars?

It reminds me of the "war of the currents" from the 1880's-1890's: alternating current (AC) vs. direct current (DC). Westinghouse and Tesla vs. Edison.
That's an apt comparison BlackHawk.
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  #986  
Old 04-13-18, 06:41 AM
lotr10 lotr10 is offline
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Now this is an interesting bit of planetary system mechanics:

https://phys.org/news/2018-04-circum...ary-eject.html

Planets orbiting "short-period" binary stars, or stars locked in close orbital embrace, can be ejected off into space as a consequence of their host stars' evolution, according to new research from the University of Washington.

I remember a real good Outer Limits (or was it the Twilight zone) episode back in the day that showed what would happen if the earth got ejected from the solar system and lost the heat of the sun.
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  #987  
Old 04-13-18, 06:47 AM
lotr10 lotr10 is offline
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This is a clever way to look for life outside of earth:

https://phys.org/news/2018-04-viruse...robiology.html

"Viruses are an integral part of life on Earth as we know it," saysKen Stedman, a virologist at Portland State University's Center for Life in Extreme Environments and a co-author on the paper. If we are going to be thinking about life on early Earth or ancient or current life on other planets, we need to be thinking about viruses, he says.

Their current definition is more complicated, and less defamatory: viruses are entities whose genome replicates inside living cells, and are able to transfer that viral genome to other cells. As this definition implies, viruses comprise the whole reproduction cycle – and they need other living cells to reproduce. Virions, on the other hand, are the viral seedsthat could become viruses if they happen upon compatible living cells in which to replicate. On Earth, virions and viruses go hand-in-hand with life, and if we find the former on other planets they could point to cellular life once having existed on them.


The age old scientific argument: are viruses alive?

But here is why looking for them as a surragut measure of extraterrestrial life makes sense:

On Earth, viruses are thought to outnumber cellular life forms by a factor of 10. And our planet is teeming with virions. In fact, a teaspoon of sea water can contain up to 50 million virions.

If they do find any off planet "viruses" I do hope they don't bring them back to earth to study. I mean what could go wrong?
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  #988  
Old 04-13-18, 10:33 AM
eastisbest eastisbest is offline
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Quote:
Originally Posted by lotr10 View Post
You forgot to add "illegal" before immigration east!

Point
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  #989  
Old 04-15-18, 07:27 PM
lotr10 lotr10 is offline
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Keep your fingers crossed, there is an important launch taking place tomorrow:

https://www.space.com/40308-nasa-tes...go-launch.html

NASA's next exoplanet-hunting spacecraft is poised for an on-time liftoff Monday (April 16).

The Transiting Exoplanet Survey Satellite (TESS) is ready to go, as is its SpaceX Falcon 9 rocket ride, mission officials said during a pre-launch briefing today (April 15).


More on the mission:

TESS is designed to spot exoplanets by noticing the tiny brightness dips caused when they cross the face of, or transit, their host stars. This same method is employed by NASA's Kepler space telescope, which has found about two-thirds of the 3,700 exoplanets known to date.

If all goes according to plan, TESS will settle into a long, looping orbit around Earth in June, then beginning hunting for worlds that circle stars relatively close to the sun. TESS could end up discovering thousands of such planets, mission officials have said.
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  #990  
Old 04-16-18, 04:57 PM
BlackHawk BlackHawk is offline
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Originally Posted by lotr10 View Post
Keep your fingers crossed, there is an important launch taking place tomorrow:

https://www.space.com/40308-nasa-tes...go-launch.html

NASA's next exoplanet-hunting spacecraft is poised for an on-time liftoff Monday (April 16).

The Transiting Exoplanet Survey Satellite (TESS) is ready to go, as is its SpaceX Falcon 9 rocket ride, mission officials said during a pre-launch briefing today (April 15).


More on the mission:

TESS is designed to spot exoplanets by noticing the tiny brightness dips caused when they cross the face of, or transit, their host stars. This same method is employed by NASA's Kepler space telescope, which has found about two-thirds of the 3,700 exoplanets known to date.

If all goes according to plan, TESS will settle into a long, looping orbit around Earth in June, then beginning hunting for worlds that circle stars relatively close to the sun. TESS could end up discovering thousands of such planets, mission officials have said.
The TESS launch was postponed. Tentatively re-scheduled for Wednesday.
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