Astronomy - for iPad/Mac/PC: Recent Episodes
The Open University
Thanks to cutting-edge radio and infra-red astronomy, our understanding of the universe is moving very fast. Ideas about black holes and cosmic jets are constantly being refined as new discoveries are made using new, more powerful telescopes. This album explores the incredible discoveries and theories developed in recent years and introduces the astronomical observatories, space missions and satellites that have made it possible. The 12 video tracks reveal that our sun, though essential for our existence, is an unremarkable member of the stellar menagerie. They describe how astronomers study the structure and dynamics of our galaxy, the Milky Way and they introduce the challenges inherent in mapping the geometry and expansion of the universe. This material forms part of the course S282 Astronomy.
Scientists investigate sun spots, solar flares and arcs using x-ray telescopes, featuring the Big Bear Observatory in LA.
Transcript -- Scientists investigate sun spots, solar flares and arcs using x-ray telescopes, featuring the Big Bear Observatory in LA.
What would the sun look like if we had magnetically sensitive eyes? How the most sensitive radio telescopes on earth work.
Transcript -- What would the sun look like if we had magnetically sensitive eyes? How the most sensitive radio telescopes on earth work.
Transcript -- Astronomers compare events on other stars to helps us better understand our sun.
Transcript -- The discovery of radio emissions from the Milky Way, and the theory of dark-matter.
Infra-red satellites. The DIRBE experiment on NASA's Cosmic Explorer opened a new window into the Milky Way.
Transcript -- Infra-red satellites. The DIRBE experiment on NASA's Cosmic Explorer opened a new window into the Milky Way.
A route map to the stars. The Hipparcos satellite measured the position of stars with better precision than ever before.
Transcript -- A route map to the stars. The Hipparcos satellite measured the position of stars with better precision than ever before.
The advent of radio astronomy. How radio telescopes like the Maxwell telescope in Hawaii work and what they can tell us about cosmic jets.
Transcript -- The advent of radio astronomy. How radio telescopes like the Maxwell telescope in Hawaii work and what they can tell us about cosmic jets.
How do radio astronomers see jets far outside our galaxy? Introducing the MERLIN array in the UK and the VLA in New Mexico.
Transcript -- How do radio astronomers see jets far outside our galaxy? Introducing the MERLIN array in the UK and the VLA in New Mexico.
What is the connection between black holes and cosmic jets? Scientists measure the mass and gravitational energy of black holes.
Transcript -- What is the connection between black holes and cosmic jets? Scientists measure the mass and gravitational energy of black holes.
What goes on deep in the centre of galaxies? Revealing the power source for stars and galactic jets.
Transcript -- What goes on deep in the centre of galaxies? Revealing the power source for stars and galactic jets.
Russell Stannard uses simple analogies to explain difficult concepts. The expansion of space, and the cosmological red-shift, or doppler shift.
Transcript -- Russell Stannard uses simple analogies to explain difficult concepts. The expansion of space, and the cosmological red-shift, or doppler shift.
Russell Stannard explains why standard Euclidean geometry doesn't apply when considering the geometry of outer space.
Transcript -- Russell Stannard explains why standard Euclidean geometry doesn't apply when considering the geometry of outer space.