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Welcome to tetra3! tetra3 is a fast lost-in-space plate solver for star trackers written in Python. Use it to identify stars in images and get the corresponding direction (i.e. right ascension and declination) in the sky which the camera points to and indentification of the stars. tetra...
Gaia BH1 is a spectacular find, but also a puzzling one. It is difficult to explain how a system like this could have formed in the first place. Specifically, the progenitor star that later turned into a black hole would be expected to have had a mass of at least 20 solar masses, wh...
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Global Daily Actual and Snow-Free Blue-Sky Land Surface Albedo Climatology From 20-Year MODIS Products Land surface albedo plays a critical role in climate, hydrological and biogeochemical modeling, and weather forecasting. It is often assigned in models and... A Jia,D Wang,S Liang,... - 《...
The burst also provided a long-awaited inaugural observing opportunity for a link between two experiments on the International Space Station – NASA’s NICER X-ray telescope and a Japanese detector called the Monitor of All-sky X-ray Image (MAXI). Activated in April, the connecti...
This all-sky image was obtained by ESA's Integral gamma-ray observatory during four years of operations and provides an important step towards estimating how many black holes there are in the Universe. The sources in this image were artificially blurred and the colour map was stretched to make...
The article reports that the Open Sky Technologies Fund, a venture capital fund of the European Space Agency (ESA), has invested to TakWak GmbH, which develops combined satnav, mobile phone and walkie-talkie device, and iOpener Media, which matches real-time satnav data from races with ...
across more than a third of the sky. Euclid will explore how the Universe has expanded and how structure has formed over cosmic history, revealing more about the role of gravity and the nature of dark energy and dark matter. Credit: ESA/Euclid/Euclid Consortium/NASA. Background galaxies: NA...