A2U_Nexus

NASA Animation Sizes Up the Biggest Black Holes

In an incredible first, astronomers have discovered what lies at the core of Mars. It turns out, the Red Planet isn't as lifeless as we once thought. Mars wasn't always a dusty, barren world. There's plenty of evidence that the planet was warm, had lakes of liquid water, and was habitable for a short period in its history. Astronomers had always wanted to know the reason behind this transition, and for that, they had to know what lies at the core of Mars. When the InSight lander started studying the planet's interior, it discovered that the planet is still rumbling with seismic activity. Now, following a rigorous half-decade mission, InSight has granted scientists a clear vision of the Martian core. So, how does Mars' core differ from Earth's? What methods did InSight employ to unveil the core of the Red Planet? Finally, and most importantly, what does it tell us about the future of our planet?

How SpaceX and NASA Plan To Established The First Moon Base.

Editor's Note: A previous version of this video mislabeled the orbit of Saturn as the orbit of Jupiter. This new NASA animation highlights the "super" in supermassive black holes. These monsters lurk in the centers of most big galaxies, including our own Milky Way, and contain between 100,000 and tens of billions of times more mass than our Sun. Any light crossing the event horizon - the black hole's point of no return - becomes trapped forever, and any light passing close to it is redirected by the black hole's intense gravity. Together, these effects produce a "shadow" about twice the size of the black hole's actual event horizon. The animation shows 10 supersized black holes that occupy center stage in their host galaxies, including the Milky Way and M87, scaled by the sizes of their shadows. Starting near the Sun, the camera steadily pulls back to compare ever-larger black holes to different structures in our solar system. #Nasa#space#moon#universe#discovery