8 March 2021
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  • [ 7 March 2021 ] Red hypergiant mimics Betelguese with dusty dimming on a vast scale News
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Chopo Ma

News

NASA explains why 30 June received an extra ‘leap second’

30 June 2015 Astronomy Now

Although we are unaware of it in our everyday lives, the Earth’s rotation is slowing down, so each mean solar day is about 0.002 seconds longer than the last. NASA explains why Tuesday, 30 June 2015, will have an extra second, or “leap” second, added.

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News Headlines

  • Red hypergiant mimics Betelguese with dusty dimming on a vast scale

    7 March 2021
  • Evidence grows for pulsar at the heart of famed supernova remnant

    1 March 2021
  • Juno mission extended, will now study Jupiter’s moons and rings

    26 February 2021
  • Video provides thrilling bird’s eye view of Mars landing

    22 February 2021
  • Perseverance Mars rover lands on Mars, beams back dramatic photos

    19 February 2021
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