Millions of ‘space junk’ objects orbit Earth; The SpaceX Falcon 9 rocket will test a solution.
Because, you know ... humans are the polluting kind.
A sub-mission, dubbed "RemoveDebris," is included in the SpaceX Falcon 9 Dragon-14 mission, launched April 2 from Cape Canaveral, which has a number of research projects aboard.
RemoveDebris includes a main satellite, weighing 100 kg, and a pair of smaller “dummy” targets known as CubeSats, which can inflate like balloons to mimic the dimensions of an average object considered “space junk.”
How big is the space junk problem? Beginning in 1957, humans have accumulated at least 7,000 satellites and 5,000 rockets in low Earth orbit. Sometimes these objects collide with each other, as well, producing even more space debris as the things break apart. It’s massive: The European Space Agency estimates 166,000,000 debris objects polluting Earth’s orbit as of January, 2017. Wow.
Some of them are careening around low Earth orbit at over 17,000 mph. Even worse, an object the size of a sugar cube can cause significant damage when it collides with a new satellite attempting to reach orbit.
It’s not the first time the idea has been conceived; researchers in China are working on a “Space robotic cleaner” that will be designed to clean up space junk and use it as fuel.
The project is spearheaded by the Surrey Space Centre of the University of Surrey in SE U.K. and will begin testing near the end of May, 2018.
That's a sharp increase from the 1960s when it took the same share of scientists an average of 35 years to drop out of academia.
- The study tracked the careers of more than 100,000 scientists over 50 years.
- The results showed career lifespans are shrinking, and fewer scientists are getting credited as the lead author on scientific papers.
- Scientists are still pursuing careers in the private sector, however there are key differences between research conducted in academia and industry.
We have to practice doing nothing more often.
- Constantly being busy is neurologically taxing and emotionally draining.
- In his new book, Jon Kabat-Zinn writes that you're doing a disservice to others by always being busy.
- Busyness is often an excuse for the discomfort of being alone with your own thoughts.
The bold technique involves surgically implanting a so-called microneedle patch directly onto the heart.
- Heart attacks leave scar tissue on the heart, which can reduce the organ's ability to pump blood throughout the body.
- The microneedle patch aims to deliver therapeutic cells directly to the damaged tissue.
- It hasn't been tested on humans yet, but the method has shown promising signs in research on animals.
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