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Showing posts with the label why does time slow down near a black hole

China Makes History Again: Chang'e-6 Returns with Groundbreaking Moon Samples

In a remarkable achievement, China has successfully collected samples from the far side of the moon, marking a significant milestone in space exploration. The Chang'e-6 mission, launched on May 3, touched down in the Apollo crater within the vast South Pole-Aitken basin on June 1. During its brief but productive stay, the spacecraft gathered approximately 2 kilograms of lunar material using a scoop and drill. The samples, now stored in an ascent vehicle, are expected to return to Earth on June 25, landing in Inner Mongolia. This historic achievement not only demonstrates China's space program prowess but also provides scientists with a unique opportunity to unravel the mysteries of the moon's formation and evolution.   Achievements: - *First-ever samples from the far side*: Chang'e-6 successfully collects lunar material from the moon's less-explored hemisphere. - *Second successful farside landing*: China builds on its 2019 achievement with...
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Why Does Time Slow Down Near a Black Hole?

Black holes are some of the most intriguing, yet not very well-understood objects in the universe, which are best described by Einstein’s theory of general relativity One of the more interesting predictions of the theory is that even time will slow down near a black hole. But why, exactly? Time slows down near a black hole due to the extremely strong gravitational field of the black hole. According to the theory of general relativity, this phenomenon is due to the gravity of the black hole curving spacetime in a way that affects all measurements of time and space near the black hole. In this article, we’ll be discussing all about this slowing down of time -thing in great detail (namely the interesting geometry behind it) as well as looking at some consequences of this phenomenon (such as how it affects aging). We’ll also look at some concrete examples of how much time actually slows down near a black hole as well as how different properties of black holes affect...
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Webb successfully deployed it's secondary mirror.

Today, Webb teams successfully deployed the observatory’s secondary mirror support structure. When light from the distant universe hits Webb’s iconic 18 gold primary mirrors, it will reflect off and hit the smaller, 2.4-foot (.74-meter) secondary mirror, which will direct the light into its instruments. The secondary mirror is supported by three lightweight deployable struts that are each almost 25 feet long and are designed to withstand the space environment. Specialized heating systems were used to warm up the joints and motors needed for seamless operation. “Another banner day for JWST,” said Bill Ochs, Webb project manager at NASA’s Goddard Space Flight Center, as he congratulated the secondary mirror deployment team at the Mission Operations Center in Baltimore. “This is unbelievable…We’re about 600,000 miles from Earth, and we actually have a telescope.” The deployment process began at approximately 9:52 a.m. EST, and the secondary mirror finished moving into its extended positio...
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When was the Big Bang?

The Big Bang was 13.8 billion years ago. "We get that number by the fact that the universe is expanding so when we look at galaxies, they’re all moving away from us and that’s true of every point in the universe. So, if you imagine the surface of a balloon with galaxies drawn on and you inflate it, they’re all moving apart from each other. But if you wind that back to when they were all together it was about 13.8 billion years ago. "So, there is something called a cosmic calendar where the entire history of the universe is squeezed into one year. So, if you have the Big Bang at one new year then all of human civilisation appears at 30 seconds to midnight on the 31 st  of December. So, compared to us that’s a very, very long time. "People often ask what came before the Big Bang and no one knows, and it’s possible there was nothing, which is very hard to explain because both time and space were created with the Big Bang and so now you are getting very metaphysical. S...
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Jupiter Like Planet Discovered By NASA's Citizen Scientist

The signature for the newly discovered planet was hiding in data from NASA’s Transiting Exoplanet Survey Satellite, or TESS. Using TESS data, scientists look for changes in brightness of nearby stars, which could indicate the presence of orbiting planets. Jacobs is part of a group of citizen scientists who look at plots of TESS data, showing the change in a star’s brightness over time, in search of new planets. While professional astronomers use algorithms to scan tens of thousands of data points from stars automatically, these citizen scientists use a program called LcTools, created by Alan R. Schmitt, to inspect telescope data by eye. That’s why Jacobs’ group, which includes several citizen scientists and two veteran astronomers, calls themselves the Visual Survey Group. Many of them met while working on Planet Hunters, a NASA-funded citizen science project through Zooniverse that focused on data from NASA’s Kepler spacecraft. On February 1, 2020, Jacobs happened to notice a plot ...
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