First broadcast in 1999. How big a threat to Earth are asteroids and comets? Read more
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Impact on Earth?
First broadcast in 1999. How big a threat to Earth are asteroids and comets?
The Last Total Solar Eclipse of the 20th Century
First broadcast in 1999. How to view and photograph partial and total solar eclipses
The Weather on Mars
First broadcast in 1999. Mars Climate Orbiter measures the Martian climate and atmosphere
Martian Dust that Falls to Earth
First broadcast in 1999. The material from Mars that falls to the Earth
Transit of Mercury
First broadcast in 1999. The importance of a transit of Mercury
X-ray of the Universe
First broadcast in 1999. Chandra, a telescope to monitor X-rays coming from space
Millennial Moon
First broadcast in 2000. Total eclipse of the Moon - discussion with Robin Scagell
Probe at Jupiter
First broadcast in 2000. Latest discoveries from the Galileo mission
Interview with Astronaut Jeff Hoffman
First broadcast in 2000. The astronaut on the prospect of landing on Mars
The Aurora
First broadcast in 2000. The Aurora is caused by solar activity