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Asteroid approach, Science operations begin!
Holder of the Tw...
post Aug 24 2018, 06:48 PM
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NASA update on the OSIRIS-REx mission, includes first picture of the asteroid from the spacecraft.

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alan
post Apr 17 2019, 08:44 PM
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The popular model these days is that in the protoplanetary disk dust grews into pebbles, probably mm sized in the inner solar system. In some parts of the disk these be came concentrated enough by one of a variety of of mechanisms to undergo a gravitational instability which caused clumps of them to collapse into asteroids ~100km in diameter. The consolidated rocks would form in these asteroids and be broken up and scattered in later collisions.
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- Holder of the Two Leashes   Asteroid approach   Aug 24 2018, 06:48 PM
- - B Bernatchez   First Approach Maneuver completed: https://www.as...   Oct 6 2018, 10:33 PM
- - Explorer1   New images! (they will be leaving the '8-b...   Oct 19 2018, 02:12 PM
|- - mcaplinger   QUOTE (Explorer1 @ Oct 19 2018, 06:12 AM)...   Oct 19 2018, 04:16 PM
- - Explorer1   https://www.asteroidmission.org/bennu-jupit...exob...   Oct 24 2018, 08:03 PM
- - Hungry4info   New rotation movie from 3000 km taken on 23 Oct 20...   Oct 26 2018, 01:18 AM
- - Phil Stooke   These are the 3 frames in that short movie, a bit ...   Oct 26 2018, 05:37 AM
- - mcmcmc   Countdowns: https://programmi.000webhostapp.com/os...   Oct 29 2018, 01:39 PM
|- - mcmcmc   QUOTE (mcmcmc @ Oct 29 2018, 02:39 PM) Co...   Oct 29 2018, 02:39 PM
- - Paolo   Bennu at 100 Pixels looking a lot like Ryugu   Oct 30 2018, 07:41 PM
- - Phil Stooke   One very good thing about this is that I can use e...   Oct 30 2018, 09:43 PM
- - mcmcmc   These direct query links to NASA Horizons provide ...   Oct 31 2018, 01:44 PM
- - mcaplinger   There are SPICE kernels for Orex at https://naif.j...   Oct 31 2018, 04:09 PM
|- - mcmcmc   QUOTE (mcaplinger @ Oct 31 2018, 05:09 PM...   Oct 31 2018, 04:58 PM
|- - mcaplinger   QUOTE (mcmcmc @ Oct 31 2018, 08:58 AM) I ...   Oct 31 2018, 08:44 PM
|- - mcmcmc   QUOTE (mcaplinger @ Oct 31 2018, 09:44 PM...   Nov 1 2018, 04:21 PM
|- - djellison   QUOTE (mcmcmc @ Nov 1 2018, 08:21 AM) It...   Nov 1 2018, 05:34 PM
- - Phil Stooke   An approach GIF was just released - these are the ...   Nov 2 2018, 08:07 PM
- - Hungry4info   Two Sides of Bennu   Nov 6 2018, 01:22 AM
- - Explorer1   Interesting dark patches in the southern hemispher...   Nov 6 2018, 03:46 AM
- - charborob   Bennu full rotation at 200 pixels.   Nov 6 2018, 09:09 PM
- - Phil Stooke   Beautiful! That should be enough for a prelim...   Nov 7 2018, 12:10 AM
|- - mcmcmc   QUOTE (Phil Stooke @ Nov 7 2018, 01:10 AM...   Nov 7 2018, 11:13 AM
- - walfy   Here's a quickly rotating GIF in 3D of it, wit...   Nov 8 2018, 06:05 AM
- - walfy   This version spins much slower, at 3 second interv...   Nov 8 2018, 06:11 AM
- - Phil Stooke   Nice! And another way of presenting the data ...   Nov 8 2018, 07:33 AM
- - Roman Tkachenko   Asteroid Bennu Rotation (3D animation)   Nov 9 2018, 01:17 PM
- - mcmcmc   Interactive video: http://win98.altervista.org/spa...   Nov 12 2018, 09:15 PM
- - charborob   Bennu at 300 pixels.   Nov 23 2018, 07:53 PM
- - Spock1108   Bennu is really very small compared to Ryugu, it...   Nov 24 2018, 09:07 AM
- - Holder of the Two Leashes   I guess the best word I can think of here is ...   Nov 30 2018, 05:17 PM
- - tanjent   That's a nice side-by side comparison of the t...   Nov 30 2018, 07:08 PM
|- - HSchirmer   QUOTE (tanjent @ Nov 30 2018, 07:08 PM) ....   Dec 5 2018, 04:03 AM
- - Adam Hurcewicz   OSIRIS-REx Arrival to Bennu (3-18 Dec 2018) http...   Dec 2 2018, 01:05 PM
|- - Daniele_bianchino_Italy   I allowed myself to revisit Emily's comparison...   Dec 3 2018, 11:30 AM
- - PhilipTerryGraham   This is what I'm assuming to be new, higher-re...   Dec 3 2018, 05:55 PM
- - Holder of the Two Leashes   At the OSIRIS-REx website, the caption for the abo...   Dec 3 2018, 07:08 PM
- - vjkane   I suspect it may take a lot of careful planning to...   Dec 3 2018, 08:31 PM
- - ElkGroveDan   The first thing that stands out is how unusually s...   Dec 3 2018, 08:54 PM
- - Y Bar Ranch   The animation makes it look like boulders should b...   Dec 4 2018, 02:33 AM
- - elakdawalla   I pride myself on being able to discern solar syst...   Dec 4 2018, 06:17 AM
- - Hungry4info   One thing that will help will be that the camera v...   Dec 5 2018, 12:33 AM
- - nprev   Sure is a jagged little beast. Makes me wonder if ...   Dec 5 2018, 03:13 AM
- - Holder of the Two Leashes   High Phase Angle Picture taken seven hours before ...   Dec 5 2018, 05:47 PM
|- - Steve5304   QUOTE (Holder of the Two Leashes @ Dec 5 2018...   Dec 7 2018, 01:05 PM
- - Holder of the Two Leashes   News conference ready to start in fifteen minutes....   Dec 10 2018, 06:45 PM
|- - pbanholzer   QUOTE (Holder of the Two Leashes @ Dec 10 201...   Dec 11 2018, 02:24 AM
- - elakdawalla   Here are a few images from the press briefing mate...   Dec 11 2018, 06:46 PM
- - elakdawalla   This is the best I can do -- please someone here d...   Dec 11 2018, 06:58 PM
- - Ian R   Here's a mediocre effort of my own, Emily   Dec 12 2018, 12:18 AM
- - charborob   Bennu North Pole flyover.   Dec 22 2018, 08:03 PM
- - kenny   OSIRIS-REx has successfully entered orbit around B...   Jan 1 2019, 12:17 PM
|- - MarkG   [quote ...It is orbiting a mere 1 mile (1.75km) fr...   Jan 1 2019, 10:18 PM
- - Marcin600   New image - Bennu’s south pole: https://www....   Jan 23 2019, 12:11 AM
- - Explorer1   Very nice high-res view near the north pole: https...   Feb 28 2019, 04:45 AM
- - Marcin600   New pics - region of Bennu’s northern hemisp...   Mar 14 2019, 09:55 PM
- - Hungry4info   Bennu has plumes! (or perhaps rather ejections...   Mar 19 2019, 07:24 PM
- - Explorer1   So Bennu apparently has temporary moons every once...   Mar 20 2019, 03:37 AM
- - PhilipTerryGraham   So we've uncovered a contact binary KBO that...   Mar 20 2019, 05:42 AM
- - nprev   Hard to think of anything that would cause this as...   Mar 20 2019, 06:30 AM
- - stevesliva   You mention thermal and mechanical/gravity. Ther...   Mar 20 2019, 02:06 PM
- - Gerald   Agreed, electrostatic charging due to solar UV may...   Mar 20 2019, 02:09 PM
- - Marcin600   Or maybe Bennu is a body reassembled from fragment...   Mar 20 2019, 07:11 PM
- - bsharp   Image processing artifacts or a lot more particles...   Mar 21 2019, 12:56 PM
- - fredk   Recall that that press release image was a composi...   Mar 21 2019, 03:14 PM
|- - bsharp   QUOTE (fredk @ Mar 21 2019, 04:14 PM) Sin...   Mar 21 2019, 06:17 PM
- - tolis   if memory serves, the charge-to-mass ratio of cm-s...   Mar 21 2019, 08:04 PM
- - Roman Tkachenko   This 3D visualization is based on my preliminary 3...   Mar 27 2019, 05:41 PM
- - Phil Stooke   Very nice!. Here is a map of Bennu. The main...   Mar 27 2019, 07:11 PM
- - elakdawalla   Nice map! I believe that the rock at 45S 130E ...   Mar 27 2019, 08:46 PM
- - charborob   Bennu boulder in 3D.   Mar 27 2019, 10:09 PM
- - Marcin600   New pictures on the OSIRIS-REx website: Bennu...   Apr 7 2019, 05:04 PM
- - Marcin600   Two Bennu's pictures ( https://www.asteroidmis...   Apr 7 2019, 07:22 PM
- - Marcin600   Interesting photos from OSIRIS-REx: really huge bo...   Apr 11 2019, 10:21 PM
- - Marcin600   More beautiful boulders: https://www.asteroidmissi...   Apr 12 2019, 07:47 PM
- - Daniele_bianchino_Italy   This revolutionizes a bit how I imagined the surfa...   Apr 14 2019, 09:03 AM
|- - Marcin600   QUOTE (Daniele_bianchino_Italy @ Apr 14 2019,...   Apr 16 2019, 01:29 AM
- - Marcin600   "Benben" - largest boulder on Bennu: htt...   Apr 15 2019, 10:17 PM
- - AndyG   I need help here. I can see a protoplanetary disc...   Apr 16 2019, 10:36 PM
|- - Marcin600   QUOTE (AndyG @ Apr 17 2019, 12:36 AM) I n...   Apr 16 2019, 11:26 PM
- - Marcin600   As far as I know, the details of the transition ...   Apr 16 2019, 11:34 PM
- - alan   The popular model these days is that in the protop...   Apr 17 2019, 08:44 PM
|- - JRehling   My understanding, via meteorites: Parent bodies w...   Apr 18 2019, 01:53 AM
- - charborob   Looking at the published images of Bennu (link), I...   May 10 2019, 02:05 AM
- - Marcin600   North side of Bennu's largest boulder (nicknam...   May 14 2019, 11:46 PM
- - Marcin600   And a bit more "free" version of this ph...   May 15 2019, 12:45 AM
- - climber   Why did you choose the shortest men on the Moon?   May 15 2019, 08:08 PM
- - Marcin600   QUOTE (climber @ May 15 2019, 10:08 PM) W...   May 15 2019, 08:32 PM


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