Category Archives: Astronomy

Universe is expanding 5 to 9 percent faster than we had thought Comments Off on Universe is expanding 5 to 9 percent faster than we had thought

New image stacking technique achieves 5 centimeter terrain resolution on Mars Comments Off on New image stacking technique achieves 5 centimeter terrain resolution on Mars

© 2016 Peter Free Citation — to study Tao and J.-P. Muller, A novel method for surface exploration: Super-resolution restoration of Mars repeat-pass orbital imagery, Planetary and Space Science 121: 103-114, DOI: 10.1016/j.pss.2015.11.010 (February 2016) Citation — to press release Bex Caygill, Mars’ surface revealed in unprecedented detail, University College of London (26 April 2016) […]

Ingenious hypothesis suggests that — moon’s axial poles wandered 6 degrees about 3 billion years ago — and stayed there Comments Off on Ingenious hypothesis suggests that — moon’s axial poles wandered 6 degrees about 3 billion years ago — and stayed there

© 2016 Peter Free Citation — to study M. A. Siegler, R. S. Miller, J. T. Keane,M. Laneuville, D. A. Paige, I. Matsuyama, D. J. Lawrence, A. Crotts, and M. J. Poston, Lunar true polar wander inferred from polar hydrogen, Nature 531(7595): 480–484, DOI: 10.1038/nature17166 (24 March 2016) Citation — to press release Office of […]

Big! — NGC 4889’s black hole has a mass of 21 billion of our suns — and an event horizon approximately 15 times the distance from our sun to Neptune Comments Off on Big! — NGC 4889’s black hole has a mass of 21 billion of our suns — and an event horizon approximately 15 times the distance from our sun to Neptune

© 2016 Peter Free Citation — to press release Mathias Jäger, The sleeping giant, Hubble Space Telescope (11 February 2016) From remarkably voluminous gas gobbling to peaceful coexistence From Hubble Space Telescope: Located about 300 million light-years away in the Coma Cluster, the giant elliptical galaxy NGC 4889 . . . is home to a […]

First time detected argon to water ratio — on a Jupiter Family comet named 67P/Churyumov-Gerasimenko — shows too much argon on the comet — to account for Earth’s presumed water delivery by comets — at least of this type Comments Off on First time detected argon to water ratio — on a Jupiter Family comet named 67P/Churyumov-Gerasimenko — shows too much argon on the comet — to account for Earth’s presumed water delivery by comets — at least of this type

© 2015 Peter Free Citation — to study Hans Balsiger, Kathrin Altwegg, Akiva Bar-Nun, Jean-Jacques Berthelier, Andre Bieler, Peter Bochsler, Christelle Briois, Ursina Calmonte, Michael Combi, Johan De Keyser, Peter Eberhardt, Björn Fiethe, Stephen A. Fuselier, Sébastien Gasc, Tamas I. Gombosi, Kenneth C. Hansen, Myrtha Hässig, Annette Jäckel, Ernest Kopp, Axel Korth, Lena Le Roy, […]