Comets of this type aren’t everyday sightings. The opportunity to observe objects that might have orbital periods measured in thousands of years is fleeting. So when Comet Lemmon recently appeared
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Check out the ripples from the coronal wave lifting off during the X5.1 solar flare. (Image credit: NOAA Space Weather Prediction Center) The sun erupted in spectacular fashion this morning
HELSINKI — China is continuing to assess plans for the return of the Shenzhou-20 crew following a suspected debris strike, with no new return timeline announced. A China Manned Space
Orbital evolution of satellites, in the relative system, to Constellation Titan — Satellite Navigation Exploring Saturn’s largest moon, Titan, presents unique orbital challenges due to its dense atmosphere, gravitational perturbations,
VOYAGERS target stars were selected from 47,864 GES members following several screening steps. Available stellar properties were used to screen to 156 candidates. TRES spectra were then used to identify
c. Approximate ages for the origin of nitrogenase isoforms are based on geochemical12 and phylogenetic data. — biorxiv.org Nitrogen isotope fractionation (ε15N) in sedimentary rocks has provided evidence for biological
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