Large satellite constellations in low-Earth orbit seek to be the infrastructure for global broadband Internet and other telecommunication needs. We briefly review the impacts of satellite constellations on astronomy and show that the Internet service offered by these satellites will primarily target populations where it is unaffordable, not needed

The Transiting Exoplanet Survey Satellite (TESS) is recording short-cadence, high duty-cycle timeseries across most of the sky, which presents the opportunity to detect and study oscillations in interesting stars, in particular planet hosts. We have detected and analysed solar-like oscillations in the bright G4 subgiant HD 38529, which hosts an

The DESI Milky Way Survey (MWS) will observe ≥8 million stars between 16 < r < 19 mag, supplemented by observations of brighter targets under poor observing conditions. The survey will permit an accurate determination of stellar kinematics and population gradients, characterize diffuse substructure in the thick disk and stellar halo, enable the

PHOEBE 2 is a Python package for modeling the observables of eclipsing star systems, but until now it has focused entirely on the forward model—that is, generating a synthetic model given fixed values of a large number of parameters describing the system and the observations. The inverse problem, obtaining orbital and stellar parameters given

We present here observations of the comet C/2017 U7 obtained in 2018 and 2019 using the red camera of Goodman High Throughput Spectrograph (GHTS) at SOAR telescope. This comet was discovered in 2017 and found to have an hyperbolic orbit. We obtained visible spectra covering the wavelength range of 0.5─0.9 µm and also images in the SDSS filter

In this work we present the analysis of the observations of Comet P/2019 LD2 (ATLAS) with the 10-m Gran Telescopio Canarias (GTC), La Palma, Spain. P/2019 LD2 (ATLAS, hereafter LD2), was discovered early June 2019 as a faint asteroidal object and later reported as the first known Jupiter trojan asteroid to display cometary activity. A closer