Astronomy

Articles:
79 Transport of water to the upper atmosphere of Mars is driven by the seasons and dust storms, dominating the planet’s water loss to space.
https://science.sciencemag.org/content/370/6518/824

78 Extraterrestrial ribose and other sugars in primitive meteorites.
https://www.pnas.org/content/116/49/24440

77 Close-range remote sensing of Saturn’s rings during Cassini’s ring-grazing orbits and Grand Finale.
https://science.sciencemag.org/content/364/6445/eaau1017

76 The near-Earth asteroid Ryugu probably formed by reaccumulation of rubble from an impact on a larger parent asteroid.
https://science.sciencemag.org/content/364/6437/252

75 Dynamics in the Phobos Environment.
https://www.sciencedirect.com/science/article/pii/S0273117718307853

74 The merger that led to the formation of the Milky Way’s inner stellar halo and thick disk.
https://www.nature.com/articles/s41586-018-0625-x

73 Organic matter preserved in 3-billion-year-old mudstones at Gale crater, Mars.
http://science.sciencemag.org/content/360/6393/1096

72 Background levels of methane in Mars’ atmosphere show strong seasonal variations.
http://science.sciencemag.org/content/360/6393/1093

71 A density cusp of quiescent X-ray binaries in the central parsec of the Galaxy.
https://www.nature.com/articles/nature25029

70 Jupiter’s atmospheric jet streams extend thousands of kilometres deep.
https://www.nature.com/articles/nature25793

69 Clusters of cyclones encircling Jupiter’s poles.
https://www.nature.com/articles/nature25491

68 Detection of nanoflare-heated plasma in the solar corona by the FOXSI-2 sounding rocket.
http://www.nature.com/articles/s41550-017-0269-z

67 Jupiter’s interior and deep atmosphere: The initial pole-to-pole passes with the Juno spacecraft.
http://science.sciencemag.org/content/356/6340/821

66 Star formation inside a galactic outflow.
http://www.nature.com/nature/journal/v544/n7649/full/nature21677.html

65 Cassini finds molecular hydrogen in the Enceladus plume: Evidence for hydrothermal processes.
http://science.sciencemag.org/content/356/6334/155

64 A retrograde co-orbital asteroid of Jupiter.
http://www.nature.com/nature/journal/v543/n7647/full/nature22029.html

63 An intermediate-mass black hole in the centre of the globular cluster 47 Tucanae.
http://www.nature.com/nature/journal/v542/n7640/full/nature21361.html

62 Ribose and related sugars from ultraviolet irradiation of interstellar ice analogs.
http://science.sciencemag.org/content/352/6282/208

61 Lunar true polar wander inferred from polar hydrogen.
http://www.nature.com/nature/journal/v531/n7595/full/nature17166.html

60 Ancient Babylonian astronomers used techniques from geometry to calculate the position of Jupiter.
http://science.sciencemag.org/content/351/6272/482.abstract

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