Abstract The Double Asteroid Redirection Test (DART) spacecraft successfully performed
the first test of a kinetic impactor for asteroid deflection by impacting Dimorphos, the …

Core-collapse supernovae (CCSNe) mark the deaths of stars more massive than about eight
times the mass of the Sun and are intrinsically the most common kind of catastrophic cosmic …

On 2017 August 17 a binary neutron star coalescence candidate (later designated
GW170817) with merger time 12: 41: 04 UTC was observed through gravitational waves by …

Abstract The All-Sky Automated Survey for Supernovae (ASAS-SN) is working toward
imaging the entire visible sky every night to a depth of $ V\sim 17$ mag. The present data …

The merger of two neutron stars has been predicted to produce an optical–infrared transient
(lasting a few days) known as a 'kilonova', powered by the radioactive decay of neutron-rich …

At a distance of 1.295 parsecs, the red dwarf Proxima Centauri (α Centauri C, GL 551, HIP
70890 or simply Proxima) is the Sun's closest stellar neighbour and one of the best-studied …

We present the discovery of the Type II supernova SN 2023ixf in M101 and follow-up
photometric and spectroscopic observations, respectively, in the first month and week of its …

Abstract The All-Sky Automated Survey for Supernovae (ASAS-SN) is the first optical survey
to routinely monitor the whole sky with a cadence of∼ 2–3 d down to V≲ 17 mag. ASAS-SN …

We present preexplosion optical and infrared (IR) imaging at the site of the type II supernova
(SN II) 2023ixf in Messier 101 at 6.9 Mpc. We astrometrically registered a ground-based …

ABSTRACT After the All-Sky Automated Survey for SuperNovae discovered a significant
brightening of the inner region of NGC 2617, we began a∼ 70 day photometric and …