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SPACE - random thread about space stuff

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Isgrimnur
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Re: SPACE - random thread about space stuff

Post by Isgrimnur » Fri Feb 15, 2019 5:03 pm

RemoveDebris
The RemoveDebris satellite, which launched in mid-2018 from the ISS, is a test bed for technologies that may be able to help us clean up space trash. It already showed it could catch junk with a Spider-Man-style net. Now it has successfully demonstrated it can spear a target with a harpoon.

The University of Surrey in the UK posted details of the Feb. 8 test on Friday and shared a slow-motion video of the harpoon in action.


...
RemoveDebris has a final experiment set for March, and it involves the satellite's own demise. The satellite will attempt to inflate a sail that will drag it down into the Earth's atmosphere where it will burn up and not become a piece of space junk itself.
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Re: SPACE - random thread about space stuff

Post by Daehawk » Sun Feb 17, 2019 12:46 am

https://abc7chicago.com/science/my-batt ... s/5137455/
The last message they received was basically, “My battery is low and it’s getting dark.” They hoped that the windy season would clear dust off the solar panels (if that was the problem). Since then they've been pinging her again and again, every way they knew…
Flight controllers tried numerous times to make contact, and sent one final series of recovery commands Tuesday night along with one last wake-up song, Billie Holiday's "I'll Be Seeing You," in a somber exercise that brought tears to team members' eyes. There was no response from space, only silence.
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Re: SPACE - random thread about space stuff

Post by Daehawk » Mon Feb 18, 2019 2:59 pm

Thats pretty pathetic. I can get on Google Earth and zoom in to see a close up. Ive seen sat photos and see peoples faces. Must use crap to orbit the moon :)

I kinda joke as I know Earth sats are big and expensive and for good reasons. No need for one around the moon. But Id love the same type shots on the moons surface. Id enjoy finding the old Apollo stuff a lot.
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Re: SPACE - random thread about space stuff

Post by Max Peck » Thu Feb 21, 2019 9:34 am

Israel's Beresheet robot sets its sights on the Moon
Israel is about to launch its first attempt to land on the Moon.

The Beresheet robot is a privately funded venture that aims to land and hop across the lunar surface.

It's a challenging prospect. Only government space agencies from the US, Russia and China have previously managed soft touchdowns.

The 1.5m-high, 585kg Beresheet will begin its mission with a ride to Earth orbit on a SpaceX Falcon 9 rocket from Cape Canaveral in Florida.

Once ejected from this vehicle, the robot will then use its British-built engine to propel itself to the Moon. The journey will take over two months to complete.

SpaceIL, the non-profit behind the project, hopes Beresheet ("In the beginning" in Hebrew) will prove an inspiration to all those who follow its progress.
Whatever happens, Beresheet will go down as a pathfinder. Other privately funded lunar spacecraft are set to follow it.

Both the US and European space agencies have stated their intention to use commercial landers to deliver some of their scientific payloads to the Moon.

The lift-off of the Beresheet's Falcon 9 from Cape Canaveral is timed for 20:45 EST, Thursday (01:45 GMT, Friday).

The robot is actually piggybacking a ride on the flight, which has the primary function of placing a new telecoms satellite in orbit for the Indonesian company Pasifik Satelit Nusantara.
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Re: SPACE - random thread about space stuff

Post by Daehawk » Thu Feb 21, 2019 12:48 pm

Wonder why it takes it 2 months to get to the moon? Apollo took 3 days.
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Re: SPACE - random thread about space stuff

Post by Kraken » Thu Feb 21, 2019 1:35 pm

Daehawk wrote:
Thu Feb 21, 2019 12:48 pm
Wonder why it takes it 2 months to get to the moon? Apollo took 3 days.
I had the same reaction. Apparently the lander needs to achieve a specific lunar orbit before it can descend. There are various reasons that could take months, the most likely being limited fuel.

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Re: SPACE - random thread about space stuff

Post by Kraken » Wed Feb 27, 2019 12:05 am

I found the answer to that today. The spacecraft starts out in an elliptical earth orbit. When it reaches its maximum speed at perigee it fires its engine to raise the apogee. After doing that three times, its apogee crosses the moon's orbit. Then it just has to be there when the moon is and get captured by lunar gravity. Physics! It's ingenious if you aren't in a hurry and don't have much fuel.

See the "How Israeli lander will reach the moon" video here: https://www.space.com/israel-moon-lande ... wsource=cl

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Re: SPACE - random thread about space stuff

Post by Isgrimnur » Tue Mar 05, 2019 6:51 pm

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This is Insider
Two weeks after SpaceX launched the first private lunar lander toward the moon, the Israeli spacecraft sent back a stunning selfie of itself with Earth in the background (above).

The dishwasher-sized robot is a four-legged lander called Beresheet, which is Hebrew for "in the beginning" — the first words of the Bible. The $100 million mission is headed by a nonprofit called SpaceIL, which is based out of Tel Aviv University and backed primarily by the South African billionaire Morris Kahn.

In Beresheet's new selfie, which it took 23,364 miles from Earth on Tuesday, a placard of the Israeli flag is visible and reads "small country, big dreams."

If the robot successfully touches down on the lunar surface on April 11 as planned, Israel will become the fourth nation in history to pull off a moon landing. But first, Beresheet has to close the 239,000-mile gap between Earth and the moon.
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Re: SPACE - random thread about space stuff

Post by Isgrimnur » Tue Mar 05, 2019 7:06 pm

Daehawk wrote:
Fri Feb 08, 2019 12:51 am
https://www.engadget.com/2019/02/06/hay ... ding-date/
Hayabusa 2 will finally start mining an asteroid on February 22nd
Space.com
First, the spacecraft eases itself down toward the asteroid's rocky surface. Then, it immediately bounces back up, leaving a burst of flying rubble in its wake as it retreats up to safety.
...
What we don't see in that video is what caused the chaos: the spacecraft firing its sampling apparatus — basically a sophisticated bullet — and sucking up some of the debris it created. The Japan Aerospace Exploration Agency (JAXA) practiced the procedure earlier this year on Earth, using an artificial asteroid — a glorified bucket of gravel — designed to mimic Ryugu's structure and rock composition.

But knowing that it worked on Earth isn't nearly the same as watching the procedure unfold on a distant space rock. The footage was captured by a camera that was funded by public donations, JAXA noted.

Although the sampling procedure was the spacecraft's masterpiece maneuver, the mission still has a few tasks to accomplish before Hayabusa2 heads for home. First, in April, the spacecraft will create an artificial crater, then examine it to see what happened.
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Re: SPACE - random thread about space stuff

Post by AWS260 » Tue Mar 12, 2019 9:59 am


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Re: SPACE - random thread about space stuff

Post by Isgrimnur » Tue Mar 12, 2019 11:31 am

Japan moon rover
Toyota is going to the moon. The Japanese Aerospace Exploration Agency (JAXA) has teamed up with the carmaker to build a pressurized self-driving rover that will land on the lunar surface in 2029. The six-wheeled transporter will be able to carry two humans for a distance of 10,000 kilometers using solar power and Toyota's fuel cell technology. The rover will be about the size of two minibuses, with 13 square meters of habitable space, and the astronauts on board will be able to take their suits off inside the vehicle as they explore. It will land on the moon before the human expedition arrives, and travel independently to meet them.
Here's hoping that they get the airbag situation settled by then.
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Re: SPACE - random thread about space stuff

Post by Kraken » Tue Mar 12, 2019 11:34 am

That's ambitious for a country with essentially no crewed space program. I wonder how they're planning to get that rover there. It looks big and heavy and a little fragile.

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Re: SPACE - random thread about space stuff

Post by AWS260 » Sun Mar 17, 2019 12:56 am

The new Apollo 11 documentary is really, really good. Highly recommended if you're interested in the space program. I encourage you to see it in the theater, since the sound and picture quality is fantastic.

There's no new information here, but a lot of the footage is new (to me, at least), and they put it together brilliantly. My favorite part is the lunar landing -- they show the last 3-4 minutes of the landing in real time, without cuts, with a countdown timer showing time left to bingo fuel. Even knowing what's going to happen, the tension is palpable.


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Re: SPACE - random thread about space stuff

Post by Isgrimnur » Sun Mar 17, 2019 1:23 am

One thing they don't bother to explain is the 1202 alarm.
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