How does one get this idea [for the proof]? The answer is: I don’t know! It is like asking: How did Michelangelo do this?

New LIGO Events Demolish The Idea Of A ‘Mass Gap’ Between Neutron Stars And Black Holes

“For decades, we knew only of neutron stars that existed below about twice the Sun’s mass, and black holes that existed at or above about five times the Sun’s mass. Beginning in 2017, we started to see neutron stars merging together to form black holes that fell into that empty range, but those events were relatively infrequent. However, this latest discovery — of two low-mass black holes merging together to form a heavier black hole — should close off the “mass gap” range for good.

What was once a region of unknowns should now be filled in by black holes. Although there’s still a lot of science left to do to determine how rare or common black holes of different masses are, particularly in the realm of population statistics, it would now be very surprising if there were a gap in masses between neutron stars and black holes. LIGO’s latest data has demolished that idea. Despite cries of, “NOT NOW LIGO,” the Universe continues to send data our way, and our scientific discoveries go on.”

For decades, we’ve known that supernovae make both neutron stars and black holes. But until LIGO started detecting gravitational waves, we’d never seen a neutron star over 2 solar masses, and we’d never seen a black hole of less than 5 solar masses. Although LIGO saw two neutron stars merge to form a black hole a couple of times, leading to a black hole in that “mass gap” range in both instances, it had never seen two “mass gap” black holes merging before.

Well, we’re almost a year into LIGO’s third (and upgraded) data run, and already it’s seen four, including a new one this past Monday. The mass gap should be gone, and LIGO’s the observatory that demolished it.

Is Star Trek: Picard’s Hypothesized ‘Octuple Star System’ Really Possible?

“What does this mean for Aia, the Grief World that serves as a warning to future civilizations? It means it’s most likely that the octuple star system is the naturally occurring entity that they found and chose as prime real estate for this beacon, and then they moved a single planet, rather than a series of stars, to this one quasi-stable location.

By equipping the planet with a series of thrusters, just as we equip the spacecraft we put at the Sun-facing (L1) and Sun-opposed (L2) Lagrange points with thrusters, it could maintain its position relative to the other stars over time, even over hundreds of thousands of years. It’s easily possible to have 8, 9, or even greater numbers of stars all bound together in the same system for millions or even billions of years.

But if you want a planet located at the center-of-mass of all of them? That cannot occur naturally. If someone were interested in minimizing the energy required to construct such a system, however, they’d spend their energy moving and refining a single planet, rather than manipulating eight different objects of much greater mass that were as hard-to-handle as stars are. Star Trek: Picard may have gotten the sci-fi aspect of this system right, but those ancient builders of the Aia system made an incredibly wasteful decision if chose to move multiple stars around, rather than a single low-mass planet.”

In Star Trek: Picard, they just raised the possibility that a never-before-seen octuple star system was found, a clear indicator of artificial creation, with one planet in the system serving as a beacon to the galaxy, warning them against creating synthetic life. But is this necessary? Would the Universe just naturally, spontaneously create these octuple systems on its own, without the need for any intelligent intervention?

The smart money says bet on yes, but don’t think that you’ll naturally get a planet stably at the center of it all. Come find out why and get the real-life science behind Star Trek: Picard!

Space Wasn’t Always A Big Place

“It’s true that we don’t know how large the unobservable part of the Universe truly is; it may be infinite. It’s also true that we don’t know how long inflation endured for or what, if anything, came before it. But we do know that when the hot Big Bang began, all the matter and energy that we see in our visible Universe today  all the stuff that extends for 46.1 billion light-years in all directions  must have been concentrated into a volume of around the size of a soccer ball.

For at least a short period of time, the vast expanse of space that we look out and observe today was anything but big. All the matter making up entire massive galaxies would have fit into a region of space smaller than a pencil eraser. And yet, through 13.8 billion years of expansion, cooling, and gravitation, we arrive at the vast Universe we occupy a tiny corner of today. Space may be the biggest thing we know of, but the size of our observable Universe is a recent achievement. Space wasn’t always so big, and the evidence is written on the Universe for all of us to see.”

If you take stock of our Universe as we see it today, you’ll find that it’s 46.1 billion light-years to the limits of what’s observable. Contained in that vast volume are some 2 trillion galaxies, typically containing hundreds of billions of stars apiece. And yet, if you think about our picture of the Big Bang, its tells us that all of this must have been smaller, hotter, and denser in the distant past.

It’s enough to make you wonder: by how much? How big a place was space in the early days? Luckily, physics, astronomy, and cosmology have the answers, and now so can you.

Why ‘Exponential Growth’ Is So Scary For The COVID-19 Coronavirus

“But, for the time being, it appears that the COVID-19 infection is still growing exponentially in many countries across the world, including the United States. The doubling time has been increased to six days or more in South Korea and Iran, but remains between 2 and 4 days in countries like Sweden, France, Italy, Australia, Spain, the Netherlands, and the United States. And most frighteningly, if we continue on our present exponential trends, we will reach a total of over 1 million infected by early April in a large number of countries.

It doesn’t have to be this way, however. If we can dramatically reduce the rate of infection now, at this critical time (over the next 2-to-4 weeks), we could see the number of newly infected individuals drop precipitously, and slow the spread of this pandemic. The key is putting the brakes on the exponential growth phase, and to take these disease-reducing actions seriously. Unless we all take part, however, things will get a lot worse before they get better.”

For the pandemic COVID-19, the best actions we can take as individuals are to practice social distancing, to isolate those who are infected, and to self-isolate until we know who is and isn’t infected. The impacts of these interventions are maximized the more responsible we are about them, but also by having more people participate.

If we truly care about saving millions of people from dying of COVID-19, we’ll all take these necessary actions now, together, before it’s too late.

memequeen-official:

do you like the corona memes or you want me to post something else to help you forget about this shit for a moment

This Is How You Can Prove The Earth Is Round This Equinox

“Wherever you are on Earth, find a perfectly vertical object and measure its height. When the Sun reaches its highest point in the sky on the equinox, measure the length of that object’s shadow. With a little math, you should be able to calculate the angle that the Sun makes with your vertical object. On the equinox — and only on the equinox — that angle will be exactly equal to your latitude. Someone who experiences the Sun’s highest point at the same exact moment will have an identical longitude. The measured difference in angle will tell you your latitude difference, demonstrating the Earth’s curvature.”

Have you ever demonstrated, for yourself, that the Earth is round? This March 19/20, depending on where you are on Earth, is the equinox: the perfect day to do so. If you go out on the equinox and have a perfectly vertical object, you can measure the shortest length of the shadow that it casts, and the angle between the height of the stick and its shadow will tell you your latitude. If you find another person doing the same experiment at the same longitude as you, they’ll experience their shortest shadow-length at the same time.

With just a little bit of math, you can not only demonstrate the Earth is round, but measure its circumference, too. Here’s how.

Nice