WATCH: TODAYshow host craigmelvin and his fellow anchors receive their first dose of the Covid-19 vaccine.
MSNBC's Craig Melvin receives his Covid-19 vaccination shot live on the Today Show.
Inside a Black Hole
Don't let the name fool you: a black hole is anything but empty space. Black holes are some of the most extreme, bizarre and fascinating objects in the universe. Regina Caputo and Jeremy Schnittman describe what it might be like to go hunting for one.
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