American Journal of Astronomy and Astrophysics

Volume 7, Issue 1, March 2019

  • The Production of Terrestrial Meteorites – Moon Accretion and Lithopanspermia

    Martin Beech, Mark Comte, Ian Coulson

    Issue: Volume 7, Issue 1, March 2019
    Pages: 1-9
    Received: May 09, 2019
    Accepted: Jun. 12, 2019
    Published: Jul. 01, 2019
    Abstract: The conditions under which terrestrial, impact-derived ejecta can be launched into cis-lunar space is studied. A numerical code is developed in order to follow the ablation and deceleration conditions of material ejected from the Earth’s surface and outwards through the atmosphere. The deceleration filtering-effect imposed by Earth’s atmosphere res... Show More
  • Coronal Mass Ejections, Solar Cycles and Magnetic Poles Reversal

    Kim Kwee Ng

    Issue: Volume 7, Issue 1, March 2019
    Pages: 10-17
    Received: Jun. 19, 2019
    Accepted: Jul. 12, 2019
    Published: Jul. 26, 2019
    Abstract: The magnitude of the measured geomagnetic index increases when the Coronal Mass Ejections occur on the Sun's surface. The abrupt increase in the geomagnetic index has seriously impacted the accuracy in the forecast of the activity of the next solar cycle. A method is proposed to filter the effect from the Coronal Mass Ejections. The correlation bet... Show More