OSIRIS-REx arrived at asteroid Bennu this week! It will stay in orbit to do a complete survey of the asteroid. But even cooler, it will get so close to the surface it will touch Bennu briefly and use a puff of hydrogen to dislodge surface material, that it will then collect. After that, OSIRIS-REx heads back to Earth to deliver the sample!
Here is a really cool video on how this little orbiter got to Bennu and detailing its mission.
Nicolaus Copernicus (19 February 1473 – 24 May 1543) was a Renaissance-era mathematician and astronomer who formulated a model of the universe that placed the Sun rather than the Earth at the center of the universe, likely independently of Aristarchus of Samos, who had formulated such a model some eighteen centuries earlier.
The publication of Copernicus’ model in his book De revolutionibus orbium coelestium (On the Revolutions of the Celestial Spheres), just before his death in 1543, was a major event in the history of science, triggering the Copernican Revolution and making an important contribution to the Scientific Revolution.
Copernicus was born and died in Royal Prussia, a region that had been part of the Kingdom of Poland since 1466. A polyglot and polymath, he obtained a doctorate in canon law and was also a mathematician, astronomer, physician, classics scholar, translator, governor, diplomat, and economist. In 1517 he derived a quantity theory of money – a key concept in economics – and in 1519 he formulated an economic principle that later came to be called Gresham’s law.
Researchers at the University of Tokyo set a new record when they created the strongest controllable indoor magnetic field ever – and subsequently blew up their lab in the process. Both incredible events may have happened in less time than it takes for you to blink your eye, but the entire thing was caught on camera for our repeated viewing pleasure.
The generator was built in a specially designed lab produced to test its material properties, which uses a method known as electromagnetic flux compression. The team was expecting the magnetic field to peak at around 700 Teslas (the standard unit for measuring magnetic field strength, not Elon’s), but wound up at around 1,200. That means it’s some 400 times higher than the fields generated by the powerful magnets used in MRI machines and about 50 million times stronger than the Earth’s own magnetic field. As Motherboard points out, a fridge magnet has a strength of just 0.01 Tesla.
Let’s be clear here: It’s not the largest magnetic field ever produced. In 2001, Russian researchers created a magnetic field using explosives that reached 2,800 Teslas, which was so strong and uncontrollable it also blew up their equipment, but it couldn’t be tamed. (read more)