An international team of researchers using the NASA/ESA Hubble Space Telescope and several other observatories have, for the first time, uncovered a galaxy in our cosmic neighbourhood that is missing most — if not all — of its dark matter. This discovery of the galaxy NGC 1052-DF2 challenges currently-accepted theories of and galaxy formation and provides new insights into the nature of dark matter. The results are published in Nature.
Dark matter is believed to be the one that holds galaxies together. This discovery requires us new knowledge on how galaxies work. It is exciting to know what’s the explanation behind this.
The protocol has several advantages over its previous version —TLS 1.2. The biggest feature is that TLS 1.3 ditches older encryption and hashing algorithms (such as MD5 and SHA-224) for newer and harder to crack alternatives (such as ChaCha20, Poly1305, Ed25519, x25519, and x448).
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All in all, TLS 1.3 is a serious boost to Internet security, being considered nigh impossible to crack, at least with today’s resources.
Researchers have developed a stretchable, flexible patch that could make it easier to perform ultrasound imaging on odd-shaped structures, such as engine parts, turbines, reactor pipe elbows and railroad tracks—objects that are difficult to examine using conventional ultrasound equipment.
Nasa’s Curiosity rover, also known as the Mars Science Laboratory (MSL), is celebrating 2,000 martian days (sols) investigating Gale Crater on the Red Planet. In that time, the robot has made some remarkable observations.
He died peacefully at his home in Cambridge in the early hours of Wednesday, his family said.
Some quotes from Prof. Hawking:
“Remember to look up at the stars and not down at your feet. Try to make sense of what you see and wonder about what makes the universe exist. Be curious. And however difficult life may seem, there is always something you can do and succeed at.”
“The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge.”
“We are just an advanced breed of monkeys on a minor planet of a very average star. But we can understand the universe. That makes us something very special.”
“Black holes ain’t as black as they are painted. They are not the eternal prisons they were once thought. Things can get out of a black hole both on the outside and possibly to another universe. So if you feel you are in a black hole, don’t give up — there’s a way out.”
“It surprises me how disinterested we are today about things like physics, space, the universe and philosophy of our existence, our purpose, our final destination. Its a crazy world out there. Be curious.”
On March 14, NASA will join schools, students and science centers across the U.S. as they celebrate one of the most well known and beloved numbers: pi. Used throughout the STEM world – especially for space exploration! – pi is the number that results from dividing the circumference of any circle by its diameter. Pi can be and often is rounded to 3.14 (even though its decimals never end), which is why 3/14 has been designated National Pi Day.
It includes the NASA Pi Day Challenge which has four new problems in topics of exoplanets, helium rain, earthquake on Mars and asteroid ‘Oumuamua. Let’s solve them!
T-3 days until Pi Day 2018. It’s also the birthdate of Albert Einstein. It’s truly a day for math and science.
NASA is inviting people around the world to submit their names online to be placed on a microchip aboard NASA’s historic Parker Solar Probe mission launching in summer 2018. The mission will travel through the Sun’s atmosphere, facing brutal heat and radiation conditions — and your name will go along for the ride.
This simple proof of the Pythagorean theorem reveals how brilliant Einstein’s mind is. This is my first time reading his proof and immediately amazed.
Starting with a right triangle, draw a perpendicular line from the hypotenuse to the right angle. This divides the triangle into two smaller right triangles.
$$smaller~area + larger~area = original~area$$
Adding the two triangles equals the original triangle.
Lets say:
$$a = hypotenuse~of~smaller~triangle$$
$$b = hypotenuse~of~larger~triangle$$
$$c = hypotenuse~of~original~triangle$$
These triangles are similar in terms of the angles and their sides are in proportion to each other.
Since they’re all similar, each area occupies a fraction, f, of the area of the square of the hypotenuse.