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SATELLITE NAVIGATION MARKER
After 216 days of Perseverance's successes on Mars, the rover takes a breakAt the moment, Mars and the Earth are on opposite sides of the Sun, and the two planets cannot communicate with each other.
New survey suggests Mt Everest a bit taller than past measurements: Why did the height change?The new height is 8,848.86 metres, more than 2 feet higher than the previous figure.
Why did Mount Everest's height change?As definitive as that sounds, geological changes, the complicated business of measuring a mountain and varying criteria for determining the...