The Argus telescopes join others aiming to capture short-lived or rapidly changing astrophysical events, known as transients, including exploding stars, ravenous black holes, neutron star mergers, and maybe even stars briefly eclipsed by the long-postulated hidden planet in our Solar System. The full Argus Array would watch the sky with more mirror area than all other transient telescopes put together, says team leader Nicholas Law of the department of physics and astronomy at UNC-Chapel Hill.