Planetary nebulae form when red giant stars expel their outermost layers as they run out of helium fuel, becoming hot, dense white dwarf stars that are roughly the size of Earth.
An international team led by researchers from the University of Bern in Switzerland and a group from The Open University have imaged four new brown dwarfs.
In a big development, NASA has successfully launched the third in a series of next-generation weather satellites for the National Oceanic and Atmospheric Administration (NOAA).
The NASA Innovative Advanced Concepts (NIAC) program fosters exploration by funding early-stage studies to evaluate technologies that could support future aeronautics and space missions.
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