Search results
16 hours ago · The Dark Energy Spectroscopic Instrument (DESI) consortium is conducting a five-year survey to map the large-scale structure of the Universe over one-third of the sky and 11 billion years of cosmic history, aiming to study the physics of dark energy.
6 hours ago · These include the current lunar phase, the seasons, and the clearness of the sky on any day. On average, the Moon is visible during the day for 25 days out of the month all throughout the year.
16 hours ago · One of the nearest supernova candidates and the sixteenth-brightest star in the night sky. Regulus A (α Leonis) 4.35 ± 0.1: The nearest B-type star to the Earth. Vega (α Lyrae) 2.726 ± 0.006 × 2.418 ± 0.012: Fifth brightest star in the night sky. Sirius A (α Canis Majoris) 1.711: The brightest star in the night sky. Rigil Kentaurus (α ...
16 hours ago · Brown dwarfs are substellar objects that have more mass than the biggest gas giant planets, but less than the least massive main-sequence stars.Their mass is approximately 13 to 80 times that of Jupiter (M J) —not big enough to sustain nuclear fusion of ordinary hydrogen (1 H) into helium in their cores, but massive enough to emit some light and heat from the fusion of deuterium (2 H).
