Black holes! From Stephen Hawking to Interstellar, black holes are mammoths in the world of science AND sci-fi. But what exactly IS a black hole? Do events happen inside black holes? Are black holes really a hole? Are black holes really black?! Join Gabe on this week’s episode of PBS Space Time as he debunks popular black hole misconceptions, and rethinks what the term, ‘black hole’, even means. Thought you knew what a black hole was? Think again!
2015 • Astronomy
On the anniversary of the launch of one of the most successful space mission to Mars, the National Geographic Channel is set to premiere a documentary on the Mars Orbiter Mission (MOM) also known as Mangalyaan. The MOM, was launched on November 5 in 2013 by Indian Space Research Organisation (ISRO) and entered the orbit of the red planet on September 24, 2014. The documentary produced by Miditech captures its enthralling journey of over 650 million kilometeres. In its most daring missions to date, India successfully sent a spacecraft to orbit around Mars, making it the fourth space agency in the world and the first Asian country, to successfully send a mission to the red planet. And they did this in record time, choosing a unique route and on a shoe-string budget, pulling off what is now globally recognised as the cheapest ride to Mars! So how did the (ISRO) scientists, with no previous experience in sending an inter planetary mission, design, develop and successfully launch and navigate Mangalyaan through space? What were the hurdles they faced and what out of the box solutions did they come up with to address those challenges? Using a combination of live action, expert interviews, archive footage and graphic representations the film captures the tension and drama points of the space mission. The documentary also focus on the salient features of the mission, all the drama, excitement, last minute preparations, the countdown and the successful launch.
2017 • Astronomy
Now that we’ve finished our tour of the planets, we’re headed back to the asteroid belt. Asteroids are chunks of rock, metal, or both that were once part of smallish planets but were destroyed after collisions. Most orbit the Sun between Mars and Jupiter, but some get near the Earth. The biggest, Ceres is far smaller than the Moon but still big enough to be round and have undergone differentiation.
Neutron stars are strange and violent phenomena that defy the laws of physics, and new discoveries reveal that these bizarre nightmares are far more deadly than previously believed, with the power to destroy planets and even other stars.
Thanks to the wonders of physics, astronomers can map a timeline of the universe’s history. Today, Phil’s going to give you an overview of those first few minutes (yes, MINUTES) of the universe’s life. It started with a Big Bang, when the Universe was incredibly dense and hot. It expanded and cooled, going through multiple stages where different kinds of matter could form. It underwent a phenomenally rapid expansion called inflation, which smoothed out much of the lumpiness in the matter. Normal matter formed atoms between 3 and 20 minutes after the bang, and the lumps left over from inflation formed the galaxies and larger structures we see today.
Thanks to observations of galaxy redshifts, we can tell that the universe is EXPANDING! Knowing that the universe is expanding and how quickly its expanding also allows us to run the clock backwards 14 billion years to the way the universe began - with a bang.