Hacker News
- Jack Horkheimer, the "Star Hustler", passes away http://www.skyandtelescope.com/news/home/101194934.html 4 comments
- After millennia attuned to the cosmic clock marked by night and day succession, you would think we’d know precisely when the Sun rises and sets. But a new paper suggests that our estimates are often off by 1 to 5 minutes https://www.skyandtelescope.com/astronomy-news/we-dont-really-know-when-the-sun-rises/ 4 comments space
- A low-mass sun with few elements heavier than helium provides hope that the Galaxy might contain survivors from the very first generation of stars https://www.skyandtelescope.com/astronomy-news/puny-star-might-be-specimen-from-early-universe/ 5 comments space
- Video: The Glow of Spiraling Black Holes https://www.skyandtelescope.com/astronomy-news/black-holes/video-the-glow-of-spiraling-black-holes/ 5 comments space
- Astronomers have a precise new mass measurement for Beta Pictoris b, a young gas giant still in the throes of formation 63 light-years from Earth. And it's equivalent to 11 Jupiters https://www.skyandtelescope.com/astronomy-news/astronomers-weigh-beta-pictoris-b/ 4 comments space
- Immanuel Velikovsky's Venus http://www.skyandtelescope.com/astronomy-news/history-and-sky-lore/velikovskys-venus/#respond 4 comments space
- Amateur Astronomer Captures Supernova’s First Light http://www.skyandtelescope.com/astronomy-news/amateur-astronomer-captures-supernovas-first-light/ 7 comments space
- Chasing down the Elusive 2014 MU69... New Horizons' next target was hard to find and remains a bear to pin down, but persistence has paid off. http://www.skyandtelescope.com/astronomy-blogs/cosmic-relief-david-grinspoon/chasing-the-elusive-2014-mu69/ 3 comments space
- Solar Eclipse Made Bow Waves in Earth's Atmosphere... During last summer’s solar spectacular, for the very first time, the effect of the change in sunlight, in the form of ionospheric bow waves, was observed. This phenomenon had long been suspected but never actually observed. http://www.skyandtelescope.com/astronomy-news/solar-eclipse-made-bow-waves-earths-atmosphere/ 8 comments space
- Akatsuki's Amazing Views of Venus... Almost everyone considered Japan's Venus-bound orbiter a lost cause, but Akatsuki survived, reached its objective, and is wowing scientists with results. http://www.skyandtelescope.com/astronomy-news/akatsukis-amazing-views-of-venus/ 810 comments space
- There’s a New Definition for the Term “Planet”...In a paper recently published by Kevin Schlaufman (Johns Hopkins University) he sets the upper boundary of a planet between 4 and 10 times the mass of the Jupiter. Any more massive an object is not a planet at all, but a brown dwarf — a "failed star.” http://www.skyandtelescope.com/astronomy-news/new-definition-planet/ 86 comments space
- Thomas Joel Bopp, the co-discoverer of Comet Hale-Bopp, died January 5, 2018, in Phoenix, Arizona, from liver cancer. He was 68 years old. http://www.skyandtelescope.com/astronomy-news/people-places-and-events/thomas-bopp-1949-2018/ 176 comments space
- New Telescope Sees Galaxy Down to Its Atoms http://www.skyandtelescope.com/astronomy-news/most-detailed-image-small-magellanic-cloud/ 4 comments space
- A Deeper View of Hubble’s Ultra Deep Field.... The iconic image of faraway galaxies, and one of the most-observed regions of space, has just received a spectroscopic upgrade. http://www.skyandtelescope.com/astronomy-news/deeper-view-hubble-ultra-deep-field/ 5 comments space
- NASA Joins Japanese Mission to Martian Moons... NASA is developing a key instrument for a daring mission to the Martian moons, Phobos and Deimos, including a sample return from Phobos. http://www.skyandtelescope.com/astronomy-news/nasa-joins-japanese-mmx-mars-mission-phobos-deimos/ 14 comments space
- Laser Interferometer Gravitational-Wave Observatory(LIGO) Sees Smallest Black Hole Binary Yet.... LIGO has detected another black hole merger, raising the tally to five. http://www.skyandtelescope.com/astronomy-news/ligo-sees-smallest-black-hole-binary-yet-1611201723/ 4 comments space
- Astronomers Spot First-Known Interstellar Comet http://www.skyandtelescope.com/astronomy-news/astronomers-spot-first-known-interstellar-comet/ 8 comments science
- Researchers Watched Mystery Object Reenter Earth’s Atmosphere and NASA Team Captures Spectacular Hayabusa Spacecraft Reentry from 2015 http://www.skyandtelescope.com/astronomy-news/mystery-object-to-reenter-earths-atmosphere-1103201534/ 4 comments space
- Rogue Planets: Not as Plentiful As We Thought http://www.skyandtelescope.com/astronomy-news/rogue-planets-not-plentiful/ 12 comments space
- Discovery of a Free-Floating Double Planet?... A newly discovered system may be so low-mass as to contain planets rather than stars! ...An object previously identified as a free-floating, large Jupiter analog turns out to be 2 objects — each with the mass of a few Jupiters! http://www.skyandtelescope.com/astronomy-news/discovery-free-floating-double-planet/ 12 comments space
- New Satellite “Mayak” Might Light Up the Sky... Russia's first crowd-funded satellite, named Mayak (Russian for "beacon of light"), promises to be the “brightest object in the night sky next to the Moon.” http://www.skyandtelescope.com/astronomy-news/bright-moon-new-satellite-mayak-light-sky/ 6 comments worldnews
- New Clues on Fate of Schiaparelli Mars Lander http://www.skyandtelescope.com/astronomy-news/new-clues-schiaparelli-fate-mars/ 4 comments space
- Astronomers have discovered the first ever Type Ia supernova gravitationally lensed and revealed as a classic Einstein Cross.They believe it will soon give them a new measure of the universe’s expansion... absolutely amazing! http://www.skyandtelescope.com/astronomy-news/cosmic-lens-provides-unique-view-of-supernova/ 9 comments space
- Astronomers have detected what look like four undulations in the Milky Way Galaxy’s disk. If the structures are all part of the disk, our galaxy is more than half again as large as we thought it was. http://www.skyandtelescope.com/astronomy-news/ripples-in-the-milky-way-0316201523/ 8 comments science
- Anyone had any luck seeing Comet Lovejoy? http://www.skyandtelescope.com/astronomy-news/observing-news/spot-comet-lovejoy-tonight-122920141/ 9 comments space
- Dark Matter Spotted in the Milky Way? http://www.skyandtelescope.com/community/skyblog/newsblog/have-we-spotted-dark-matter-in-the-milky-way-251964551.html 23 comments science
- Comet ISON Spotted Again, After Being Behind Sun's Glare for 2 1/2 Months, and Not Looking Good. http://www.skyandtelescope.com/news/home/comet-ison-recovered-and-not-looking-good-219432571.html? 3 comments space
- Caves on the Moon and Mars - Earth is not the only world in the inner solar system with caves http://www.skyandtelescope.com/skytel/beyondthepage/caves-on-the-moon-and-mars-190039681.html 3 comments space
- Kepler Telescope funding to run out soon - can we get other funding to keep it going? http://www.skyandtelescope.com/news/126242378.html 4 comments space
- Why does heat generate a force that holds back the Pioneer space probe? http://www.skyandtelescope.com/community/skyblog/newsblog/119226989.html 6 comments askscience
- The real deal about the "supermoon": it's only 2% bigger than last month's, too small a difference to see. While EACH MONTH the Moon gets bigger and then smaller by 14%. Idiotic media. http://www.skyandtelescope.com/community/skyblog/observingblog/118265299.html 4 comments reddit.com
- Meteor Showers in 2011. http://www.skyandtelescope.com/observing/objects/meteors/112475399.html 3 comments space
- Our New, Improved Solar System http://www.skyandtelescope.com/community/skyblog/newsblog/105108519.html 23 comments science
- Jack Horkheimer: Ambassador to the Stars Died Today. He was 72. http://www.skyandtelescope.com/news/101194934.html 34 comments science
- At Last, 40 Years Later: Apollo Landers Seen on the Moon http://www.skyandtelescope.com/news/home/51023977.html 5 comments worldnews
- Update on the Hubble Mystery Object: It's 1.8 billion light years away and -- My God, it's full of carbon! (Maybe). http://www.skyandtelescope.com/news/home/47127082.html 38 comments science
- Highest-energy gamma rays apparently travel slightly slower than the speed of light; spacetime foam finally detected?! http://www.skyandtelescope.com/news/home/39867717.html 21 comments science
- Hubble Finds a Mystery Object http://www.skyandtelescope.com/community/skyblog/newsblog/28244844.html 221 comments science
- Dark Energy Leaves Fingerprints on Light http://www.skyandtelescope.com/news/26336764.html 6 comments science
- Earth attacts 'other moon' in orbit, will hang around until June. http://www.skyandtelescope.com/observing/highlights/7067527.html 2 comments science