scienceshockwave

FOLLOW ALL THE SCIENCE BLOGS! Masterpost: Part 2

[Updated 07/03/2014]

Hello everyone. This has been a little project of mine over the past few days 

I hope you all enjoy this listing, and share it around. Share all the science. :3

Disclaimer:

I will be editing this from time to time and I’ll keep a link to it on my blog so you can find it easily.

This is not meant to be a list of all science blogs on tumblr. Only all the ones I know about (which is still a lot but definitely not all). The blogs listed are all active as well (within the past few weeks).

If you are not on the list and want me to check out your blog, send me a message. I may or may not follow you

I categorized each blog by scientific field: 

Anthropology, Astronomy, Biology, Botany, Chemistry, Engineering/Technology, Environmental Science, General Science, Geography, Geology, Mathematics, Medical, Paleontology, Physics, Psychology and Zoology

The first post got too big, and I’ve had to split it into two posts.

Post #1 Contains the fields of Anthropology, Astronomy, Biology, Botany, Chemistry, Engineering/Technology and Environmental Science.

This post contains General Science, Geography, Geology, Mathematics, Medical, Paleontology, Physics, Psychology and Zoology.

If you’re not happy with the section I put you in, send me a message and I’ll make an edit. I had to make quick decisions on hundreds of blogs, I’m only human.

Its a LONG post, so it might be easier to just search for the field you’re interested in.

With that said, enjoy!

Keep reading

Asteroid Mining

Asteroid Mining is the process of utilizing raw materials from asteroids, small planetary-mass objects, and near Earth objects. Some of these asteroids have raw materials including but not limited to gold, cobalt, iron, manganese, molybdenum, nickel, osmium, palladium, platinum, rhenium, rhodium, ruthenium, and tungsten. In fact a very big majority of the metals that we have mined from Earth’s crust comes from asteroids hitting earth and depositing these metals. This is due to when Earth was still forming and the Crust was not solid, all the heavy materials sunk down to the core. Now some of the metals on Earth come from metals seeping up through cracks in the Earth, but more than 90% comes from asteroids, comets, and such. There are three options for mining. 1. Bring raw asteroidal material to Earth for use. 2. Process it on-site to bring back only processed materials, and perhaps produce propellant for the return trip. 3. Transport the asteroid to a safe orbit around the Moon, Earth or to the ISS. This can hypothetically allow for most materials to be used and not wasted. Currently, the quality of the ore and the consequent cost and mass of equipment required to extract it are unknown and can only be speculated. Some economic analyses indicate that the cost of returning asteroidal materials to Earth far outweighs their market value, and that asteroid mining will not attract private investment at current commodity prices and space transportation costs. Other studies suggest large profit by using solar power. Potential markets for materials can be identified and profit generated if extraction cost is brought down. For example, the delivery of multiple tones of water to low Earth orbit for rocket fuel preparation for space tourism could generate a significant profit. In 1997 it was speculated that a relatively small metallic asteroid with a diameter of 1.6 km (0.99 mi) contains more than $20 trillion USD worth of industrial and precious metals. A comparatively small M-type asteroid with a mean diameter of 1 kilometer (0.62 mi) could contain more than two billion metric tons of iron–nickel ore, or two to three times the annual production of 2004. The asteroid 16 Psyche is believed to contain 1.7×1019 kg of nickel–iron, which could supply the world production requirement for several million years. A small portion of the extracted material would also be precious metals. Although Planetary Resources says that platinum from a 30-meter long asteroid is worth 25–50 billion USD, an economist remarked that any outside source of precious metals could lower prices sufficiently to possibly doom the venture, by rapidly increasing the available supply of such metals. Development of an asteroid-orbit manipulation infrastructure could offer an irresistible return on investment, however, astrophysicists Carl Sagan and Steven J. Ostro raised the concern that altering the trajectories of asteroids in nearby interplanetary space could cause a catastrophic collision with Earth. These scientists conclude on the requirement to institute stringent controls on the misuse of orbit-engineering technology.

This post was submitted and written by: James Cornelius (clams2000@mail.com)