facebook.com ... The Hidden Universe of the Spitzer Space Telescope (Episode 33): When Worlds Collide. When worlds collide, the result is spectacular, and astronomers think they've detected the aftermath of such an event around another star. This is the Hidden Universe of the 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 --- Nearly 60 years ago, audiences thrilled to the destruction of the Earth in George Pal's classic film, "When Worlds Collide." The idea of a planetary smash-up is a staple of science fiction, but can it really happen? Astronomers using NASA's Spitzer Space Telescope think they've actually seen the aftermath of such a collision around another star. It can even help us understand similar calamities that happened long ago in our own solar system. The story unfolded as Dr. Casey Lisse and his team studied disks around young stars. Once planets have formed astronomers think there are a lot of left-over asteroids in the system. They occasionally slam together and produce dusty debris. Spitzer's Infrared Spectrograph was designed to detect the faint glow from this material. By spreading the light out into its component colors, astronomers can look for the spectral fingerprints of different minerals. This way we can figure out the composition of disks around other stars. Our dusty star of ...
Tags:
Recommend : rackmount19
ไม่มีความคิดเห็น:
แสดงความคิดเห็น