Hayabusa 2 is about to launch!

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Hayabusa 2 is about to launch!

Unread postby upriver » Tue Dec 02, 2014 8:04 pm

Maybe well get a straight story out of this mission.
Does anybody know what the Japanese think about comets and asteroids?

"Hayabusa 2's H-IIA rocket has just reached its launchpad! Japan's next asteroid sample return mission was supposed to launch this weekend, but weather has not been good at the Tanegashima launch site and it has been delayed four days already. The current launch date and time is December 3 at 04:22 UT (13:22 JST, or December 2 at 20:22, PT). There may be a live webcast available here, and as usual, Spaceflightnow.com will be providing live text and hopefully video updates. I also suggest the NASASpaceflight.com forumas an excellent place to look for screen caps of launch milestones. That's where I found this video of the launch rollout, all 32 minutes of it:"
http://www.planetary.org/blogs/emily-la ... aunch.html
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Re: Hayabusa 2 is about to launch!

Unread postby MattEU » Sat Dec 06, 2014 11:26 am

On the asteroid front they seem to be totally with the mainstream idea. Even after the original Hayabusa mission to asteroid Itokawa gave them amazing images of rocks and regolith and of course the classic peanut shape that asteroids and comets share. The last page shows their thinking after that mission.

Not sure about their view on comets though ...
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Re: Hayabusa 2 is about to launch!

Unread postby willendure » Sat Dec 06, 2014 2:02 pm

MattEU wrote:On the asteroid front they seem to be totally with the mainstream idea. Even after the original Hayabusa mission to asteroid Itokawa gave them amazing images of rocks and regolith and of course the classic peanut shape that asteroids and comets share.


Great images in that one, thanks.

Any idea what way that asteroid is rotating?
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Re: Hayabusa 2 is about to launch!

Unread postby Solar » Fri Jul 12, 2019 12:46 pm

"Our laws of force tend to be applied in the Newtonian sense in that for every action there is an equal reaction, and yet, in the real world, where many-body gravitational effects or electrodynamic actions prevail, we do not have every action paired with an equal reaction." — Harold Aspden
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Re: Hayabusa 2 is about to launch!

Unread postby ja7tdo » Sat Jul 13, 2019 4:42 pm

willendure wrote:Any idea what way that asteroid is rotating?

Asteroids rotate as electrostatic motors. The solar wind contains protons and electrons. Asteroids are rocks, so rocks are dielectrics that store electrons. On the sun's side, asteroids collect electrons.On the other side of the sun, electrons escape into space.The inflow and emission of electrons cause the asteroid to rotate like a motor.The same mechanism is happening to Mercury.
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Re: Hayabusa 2 is about to launch!

Unread postby neilwilkes » Tue Jul 23, 2019 5:30 am

MattEU wrote:On the asteroid front they seem to be totally with the mainstream idea. Even after the original Hayabusa mission to asteroid Itokawa gave them amazing images of rocks and regolith and of course the classic peanut shape that asteroids and comets share. The last page shows their thinking after that mission.

Not sure about their view on comets though ...


Indeed some great images of an object that does indeed look just like the one Rosetta just landed on too.
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