[HN Gopher] Dark energy spectroscopic instrument creates largest... ___________________________________________________________________ Dark energy spectroscopic instrument creates largest 3D map of the cosmos Author : layer8 Score : 30 points Date : 2022-01-14 19:09 UTC (3 hours ago) (HTM) web link (newscenter.lbl.gov) (TXT) w3m dump (newscenter.lbl.gov) | peter303 wrote: | DESI is just one of the super-mapping scopes to come online in | late 2010s-early 2020s. There GAIA about 3/4 through its program | to map the positions and movement of 2 billion stars (2%) in the | Milky Way. And the Roman telescope will rephotograph much of sky | at least once a week, looking objects that change brightness or | position- about 10,000,000 expected a night. These could be new | asteroids, Planet X, super novea, etc. | ArtWomb wrote: | For deep background, Michael S. Turner just published a nice | review of the past 50 years of cosmology, from when the "errors | were in the exponents" ;) | | The Road to Precision Cosmology | | https://arxiv.org/abs/2201.04741 | jrootabega wrote: | What causes the dark radial stripes? Blocked by something in the | sky? Downtime? | | I know Elite Dangerous has similar artifacts showing small radial | areas of the galaxy that our telescopes have surveyed (but it's | lines of stars rather than lines of darkness) ___________________________________________________________________ (page generated 2022-01-14 23:00 UTC)