Will we observe dark matter as a particle or a wave?
We have arguably already discovered dark matter, says columnist Chanda Prescod-Weinstein. To observe it, we will need to figure out whether we expect it to act like a particle or a wave.

<p>We have arguably already discovered dark matter, says columnist Chanda Prescod-Weinstein. To observe it, we will need to figure out whether we expect it to act like a particle or a wave.</p>