Sub-Orbital Space Flights & Satellite Exploration
Science & Reason on Facebook: tinyurl.com The Hidden Universe (Episode 20): Cassiopeia A – Echoes of a Supernova A supernova flash echoing through surrounding dust clouds has given astronomers a virtual time machine for studying the light from the explosion that nobody saw. This is the Hidden Universe of NASA’s Spitzer Space Telescope, exploring the mysteries of infrared astronomy with your host Dr. Robert Hurt. — Please subscribe to Science & Reason: • www.youtube.com • www.youtube.com • www.youtube.com • www.youtube.com — It’s the 17th century supernova that nobody saw, but telescopes in space and on Earth have teamed up to look back in time and study it today! When a massive star reaches its end of days it explodes dramatically and, for a few months, can outshine anything else in the galaxy. Earlier supernovas had been seen by many, often shining brighter than the planets. Of course with no witnesses, and no records, it’s difficult to tell exactly what kind of supernova it was. A team led by astronomer Oliver Krause has, over the last few years, made a remarkable series of infrared observations of the region. These Spitzer Space Telescope images show shifting patterns of glowing dust beyond the remnant itself. These changes are so fast that they indicate motion at the speed of light! To get what’s happening we have to remember that light moves fast, but in such a vast galaxy it still takes a while for it to get anywhere. Cassiopeia A (Cas A) itself is about 11000 …
Tags: Telescopes, universe, Spitzer, cas
The Comets Tale 2 of 6 – This BBC Documentary looks at the Secrets of Death , Life and Gravity and the Ultimate Story of a Comet. The Historic origins in Mythology, but also their meaning within our Hub. This part…Looks at Halley, Hale-Bopp, Heaven Gate and other Historic records & the modern-day tracking and study of Comets including the Kuiper Belt.
Tags: Hawaii, new, halley, comets
The Comets Tale 2 of 6 – This BBC Documentary looks at the Secrets of Death , Life and Gravity and the Ultimate Story of a Comet. The Historic origins in Mythology, but also their meaning within our Hub. This part…Looks at Halley, Hale-Bopp, Heaven Gate and other Historic records & the modern-day tracking and study of Comets including the Kuiper Belt.
Tags: gravitation, Kuiper, BBC, Tale
