It’s arrived. And Bennu looks startlingly like Ryugu. Both are diamond-shaped. Both are rubble piles.
Both missions aim to return samples to Earth.
mollwollfumble said:
It’s arrived. And Bennu looks startlingly like Ryugu. Both are diamond-shaped. Both are rubble piles.
Both missions aim to return samples to Earth.
Bet they find peroxide
mollwollfumble said:
It’s arrived. And Bennu looks startlingly like Ryugu. Both are diamond-shaped. Both are rubble piles.
Both missions aim to return samples to Earth.
I’ll never stop being amazed by fresh space stuff…
You’re right, though … both targets look like octahedra and this was not known when the missions were planned.
Almost TOO coincidental
dv said:
mollwollfumble said:
It’s arrived. And Bennu looks startlingly like Ryugu. Both are diamond-shaped. Both are rubble piles.
Both missions aim to return samples to Earth.
I’ll never stop being amazed by fresh space stuff…
You’re right, though … both targets look like octahedra and this was not known when the missions were planned.
Almost TOO coincidental
Could be some kind of municipal tip. Certainly looks a dump.
Very interesting though.
BTW you missed a trick in not calling this thread Benvenuto to Bennu
REXIS is a coded aperture soft X-ray (0.3–7.5 keV) telescope that images X-ray fluorescence line emission. Solar X-rays and the solar wind interact with the regolith of Bennu and produce this emission. Imaging is achieved by correlating the detected X-ray image with a 64 × 64 element random mask (1.536 mm pixels). REXIS forms images with 21-arcminute resolution (4.3 m spatial resolution at a distance of 700 m). REXIS will store each X-ray event in order to maximize the data storage usage and to minimize the risk. The pixels will be addressed in 64 × 64 bins and the 0.3–7.5 keV range will be covered by 5 broad bands and 11 narrow line bands. A 24-sec resolution time tag will be interleaved with the event data to account for Bennu rotation. Images will be reconstructed on the ground after downlink of the event list.
Images are formed simultaneously in 16 energy bands centered on the dominant lines of abundant surface elements from O-K (0.5 keV) to Fe-Kß (7 keV) as well the representative continuum. For 34 days during orbital phase B, 700 m from the surface of Bennu, a total of at least 133 events/asteroid pixel/energy band are expected under 2 keV; enough to obtain significant constraints on element abundances at scales larger than 10 m.
From the animations on https://www.asteroidmission.org/mission/
Look at that rock stuck to the bottom there…
dv said:
Look at that rock stuck to the bottom there…
You should see what’s on the other side.
dv said:
mollwollfumble said:
It’s arrived. And Bennu looks startlingly like Ryugu. Both are diamond-shaped. Both are rubble piles.
Both missions aim to return samples to Earth.
I’ll never stop being amazed by fresh space stuff…
You’re right, though … both targets look like octahedra and this was not known when the missions were planned.
Almost TOO coincidental
Two studios, one model.
;)
dv said:
BTW you missed a trick in not calling this thread Benvenuto to Bennu
SOK – you’ve got it covered.
mollwollfumble said:
REXIS is a coded aperture soft X-ray (0.3–7.5 keV) telescope that images X-ray fluorescence line emission. Solar X-rays and the solar wind interact with the regolith of Bennu and produce this emission. Imaging is achieved by correlating the detected X-ray image with a 64 × 64 element random mask (1.536 mm pixels). REXIS forms images with 21-arcminute resolution (4.3 m spatial resolution at a distance of 700 m). REXIS will store each X-ray event in order to maximize the data storage usage and to minimize the risk. The pixels will be addressed in 64 × 64 bins and the 0.3–7.5 keV range will be covered by 5 broad bands and 11 narrow line bands. A 24-sec resolution time tag will be interleaved with the event data to account for Bennu rotation. Images will be reconstructed on the ground after downlink of the event list.Images are formed simultaneously in 16 energy bands centered on the dominant lines of abundant surface elements from O-K (0.5 keV) to Fe-Kß (7 keV) as well the representative continuum. For 34 days during orbital phase B, 700 m from the surface of Bennu, a total of at least 133 events/asteroid pixel/energy band are expected under 2 keV; enough to obtain significant constraints on element abundances at scales larger than 10 m.
From the animations on https://www.asteroidmission.org/mission/
Nice. XRF elemental analysis using x-rays generated by the sun. Clever.
But yeah what Car said. It does look rather like a clinking, clanking, clattering collection of caliginous junk. Probably made of bits from all over so the sample return could be quite a selection.
dv said:
But yeah what Car said. It does look rather like a clinking, clanking, clattering collection of caliginous junk. Probably made of bits from all over so the sample return could be quite a selection.
What’s truly weird about this sample collection is that they are aiming to collect not a few big rocks but hundreds of small rocks and even more dust blown into the collector by a nitrogen jet. So the sample return ought to be representative.
And even more strangely, they’re not going to land so much a hover a few metres above the surface while a robotic arm gets a sample from the surface. That’s rather like how a ROV samples the ocean bed.
mollwollfumble said:
dv said:
But yeah what Car said. It does look rather like a clinking, clanking, clattering collection of caliginous junk. Probably made of bits from all over so the sample return could be quite a selection.
What’s truly weird about this sample collection is that they are aiming to collect not a few big rocks but hundreds of small rocks and even more dust blown into the collector by a nitrogen jet. So the sample return ought to be representative.
And even more strangely, they’re not going to land so much a hover a few metres above the surface while a robotic arm gets a sample from the surface. That’s rather like how a ROV samples the ocean bed.
nice
https://www.abc.net.au/news/science/2018-12-04/nasas-osiris-rex-spacecraft-arrives-at-bennu/10544760
Short video of a side on view.
https://mobile.twitter.com/osirisrex?lang=en
Mapping orbits over the next few weeks.
The following article compares Bennu and Ryugu.
https://www.space.com/42377-asteroids-bennu-ryugu-why-diamond-shape.html
Ryugu and Bennu are also likely rich in organic molecules, the carbon-containing building blocks of life as we know it. Despite such similarities, however, the two rocks are far from clones. For example, Ryugu, at about 3,000 feet wide (900 meters), is much bigger than the 1,650-foot-wide (500 m) Bennu. And the former asteroid’s surface is of fairly uniform brightness, whereas Bennu sports a diversity of light and dark patches.
