Category: Kids Stuff

Nov 16

Our Solar System Is Almost Normal, But Not Quite : by Ethan Siegel

kep

  Images credit: NASA / Kepler Dan Fabricky (L), of a selection of the known Kepler exoplanets; Rebecca G. Martin and Mario Livio (2015) ApJ 810, 105 (R), of 287 confirmed exoplanets relative to our eight solar system planets. It was just over 20 years ago that the very first exoplanet was found and confirmed …

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Aug 12

Droughts, Floods and the Earth’s Gravity, by the GRACE of NASA

Image credit: NASA Earth Observatory image by Jesse Allen, using GRACE data provide courtesy of Jay Famigleitti, University of California Irvine and Matthew Rodell, NASA Goddard Space Flight Center. Caption by Holli Riebeek.     By Dr. Ethan Siegel When you think about gravitation here on Earth, you very likely think about how constant it …

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Jul 12

The Invisible Shield of our Sun

  LL Orionis and its heliosphere interacting with interstellar gas and plasma near the edge of the Orion Nebula (M42). Image Credit: Hubble Heritage Team (AURA / STScI), C. R. O’Dell (Vanderbilt), and NASA. By Dr. Ethan Siegel Whether you look at the planets within our solar system, the stars within our galaxy or the …

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