Bob Zimmerman reports Japanese private space startup ispace is struggling with severe engine development problems for its lunar landers, while archival images from New Horizons reveal Pluto's bizarre splotched surface and floating ice mountains, and a new

  Bob Zimmerman reports Japanese private space startup ispace is struggling with severe engine development problems for its lunar landers, while archival images from New Horizons reveal Pluto's bizarre splotched surface and floating ice mountains, and a newly discovered dim galaxy hints at dark matter's vastness. 8