Jo Steer
speaker
4,901 appearances
12 recordings
1 series
first heard May 2026
last heard 2d ago
Jo Steer’s voice in public audio — every appearance, attributed to the second.
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recordings per month · last 12 monthsRecordings per month over the last 12 months — 12 in all, peaking in Sep 2026 with 4.
Appearances
Sending back hundreds of pictures.
They also recorded data about the planet's surface and atmosphere.
The Mariner six and seven observations confirmed, once and for all,
That there were not, in fact, canals, as those nineteenth century astronomers had speculated.
But
As the door closed on the canal theories,
Other avenues of discovery opened up.
In nineteen seventy one
The US and the Soviet Union sent another flurry of spacecraft towards the red planet.
Together.
These would push Mars expiration.
to a new level.
First, NASA launched its final mariner ships.
Mariner eight and nine.
This time.
The craft were designed not just to fly by Mars.
But to enter orbit around it.
Again, one of the spacecraft malfunctioned soon after launch.
But the other, Mariner 9, got to Mars.
Became the first human made object.
Showing 1721–1740 of 4,901 · page 87 of 246
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