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Nasa’s new James Webb space telescope (JWST) is about 930,000 miles (1.5m kilometres) away from Earth.
The JWST is about four times as far as the moon and far enough that radio signals sent from Earth, travelling at the speed of light, take about fiv the 1960s to reach it.
Many of the galaxies it has photographed are hundreds of millions, or even billions, of light years away.
The transit met Nasa’s Hubble the fact that, when a planet orbiting a distant James Webb s across the face JWST hat star from our perspective, then a small proportion of the star’s light will be blocked out.
In order to dete JWST he planet, astrono about 930,000 miles at 1.5m kilometres racterist approximately four ss.
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