Watch SpaceX carry NASA’s pulsar-observing instrument to the ISS

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The only objects denser than neutron stars are black holes, and they typically happen when stars over 20 times the mass of our sun explode. NICER principal investigator Keith Gendreau likens its density to Mount Everest squeezed into something like a sugar cube. Project deputy Zaven Arzoumanian says the objects pretty much “represent a natural density limit for stable matter that you can’t exceed without becoming a black hole.”

Scientists still have no idea what happens to atoms in that density, and that’s what they’re hoping to find out with the help of the new instrument. NICER will use X-ray to look for hot spot emissions caused by a pulsar’s fast rotation and strong magnetism. Its observations will help scientists figure out a pulsar’s interior structure and to find out the mass threshold needed for a star to become a black hole instead of a pulsar.

You can watch SpaceX’s Falcon 9 lift off from Kennedy Space Center’s historic 39A launch pad on NASA TV. The agency will broadcast the pre-launch briefing at 4PM and the event itself starting at 5:15PM on June 1st. SpaceX will also try to land the rocket’s first stage at Cape Canaveral if the launch is a success, so keep an eye out for a video of the attempt, as well.

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