Our closest stellar neighbor, shown here in this Hubble image, is the red dwarf Proxima Centauri. It’s just over 4 light-years away in the southern constellation Centaurus. Credit: ESA/Hubble & NASA Pulsars: These are a type of rapidly rotating neutron star. Bright X-ray hot spots form on the surfaces of these objects. As they rotate, the spots spin in and out of view like the beams of a lighthouse. Some pulsars spin faster than blender blades. NASA’s Solar Dynamics Observatory captured this image of our 4.6-billion-year-old Sun, a main sequence star. Scientists expect it will remain one for another 5 billion years before becoming a red giant. Credit: NASA's Scientific Visualization Studio/SDO

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The Vela pulsar is located in the circular white dot in the center of this image captured by NASA’s Chandra X-ray Observatory. The pulsar resides over 1,000 light-years away in the southern constellation Vela. Credit: NASA/CXC/Univ of Toronto/M. Durant et al.