American Journal of Astronomy and Astrophysics

Volume 5, Issue 3, May 2017

  • A Reason for the Earth Moving Away from the Sun and the Possibility to Escape Being Engulfed by a Red Giant Sun

    Cui-Xiang Zhong

    Issue: Volume 5, Issue 3, May 2017
    Pages: 25-27
    Received: 14 July 2017
    Accepted: 24 July 2017
    Published: 15 August 2017
    Abstract: Using the radar technology and the tracking technology of interplanetary spacecraft, scientists have calculated that the sun and Earth are gradually moving apart. But no one knows the reason why the Earth is moving away from the sun. So the author has analyzed various factors affecting Earth’s movement, and found that during the normal rotation of ... Show More
  • The Vulcanoid Asteroids: Past, Present and Future

    Martin Beech, Lowell Peltier

    Issue: Volume 5, Issue 3, May 2017
    Pages: 28-41
    Received: 10 July 2017
    Accepted: 25 July 2017
    Published: 25 August 2017
    Abstract: A review and discussion of both the historical and contemporaneous ideas pertaining to the putative population of Vulcanoid asteroids is presented. Current observations indicate that no objects larger than between 5 to 10 km in diameter reside in the orbital stability zone between 0.06 and 0.2 AU from the Sun, and that, at best, only a small popula... Show More