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Displaying results 1 - 9 of 9 items found.

1. Two JAXA mission updates: Akatsuki Venus orbit entry and PROCYON Earth flyby coming up!

(Web Page; Thu Nov 19 17:51:00 CST 2015)

Akatsuki is finally approaching its second attempt to enter Venus orbit, on December 7. The mission is asking its fans to share messages and tweet #あかつき応援 ("Akatsuki cheer") in their support. Even astronaut Kimiya Yui is getting into the...

Description: Akatsuki is finally approaching its second attempt to enter Venus orbit, on December 7; let's all wish JAXA the best of luck! And PROCYON, whose ion engines have failed, is still an otherwise perfectly functional spacecraft that is taking photos of Earth and the Moon as it approaches for a flyby.

2. Due to ion engine failure, PROCYON will not fly by an asteroid

(Web Page; Mon Oct 05 15:18:00 CDT 2015)

It's been less than a month since the PROCYON mission announced their plans to fly by asteroid 2000 DP107, but sadly, the flyby is not going to happen. The ion engines ceased working in mid-March; my last update talked about their plans ...

Description: PROCYON, the mini-satellite launched with Hayabusa2, will not be able to achieve its planned asteroid flyby due to the failure of its ion engine.

3. PROCYON update: Asteroid 2000 DP107 target selected, ion engine stopped

(Web Page; Mon Oct 05 15:14:00 CDT 2015)

PROCYON (PRoximate Object Close flYby with Optical Navigation) is a microsatellite that launched on December 3 as a secondary payload with Hayabusa2. The mission has now selected their asteroid flyby target -- a binary asteroid named 200...

Description: PROCYON (PRoximate Object Close flYby with Optical Navigation) is a microsatellite that launched on December 3 as a secondary payload with Hayabusa2. The mission has now selected their asteroid flyby target -- a binary asteroid named 2000 DP107 -- but is reporting a problem with their ion engines.

4. Brief mission update: Hayabusa2 has a launch date!

(Web Page; Mon Oct 05 13:18:00 CDT 2015)

JAXA announced the launch date for their Hayabusa2 asteroid sample return mission today: November 30 at 13:24:48 Japan standard time (04:24:48 UT / November 29 at 20:24:48 PST). This is slightly earlier than I expected (JAXA has, for a l...

Description: JAXA announced the launch date for their Hayabusa2 asteroid sample return mission today: November 30 at 13:24:48 Japan standard time (04:24:48 UT / November 29 at 20:24:48 PST)

5. Hayabusa2 is about to launch! [UPDATED]

(Web Page; Tue May 29 09:55:00 CDT 2018)

UPDATE: A successful launch! Look for a launch wrapup post tomorrow. UPDATE: JAXA will be providing a live stream of the launch on its Youtube and Ustream channels (thanks to Chris Lewicki for the tip!). There are two planned broadcas...

Description: Hayabusa2'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. If the weather holds, it will launch December 3 at 04:22 UT (13:22 JST, or December 2 at 20:22, PT). UPDATED to add links to live webcasts.

6. Hayabusa2 views Earth and the Moon on approach to December 3 flyby

(Web Page; Wed Dec 02 12:46:00 CST 2015)

I just love photos of Earth from planetary missions -- especially if they manage to get Earth and Moon in the same shot, as Hayabusa2 did on November 26. Hayabusa2 is on the way in to a flyby of Earth on December 3 at 10:07 UT. You can w...

Description: I just love photos of Earth from planetary missions -- especially if they manage to get Earth and Moon in the same shot, as Hayabusa2 did on November 26.

7. Adding Churyumov-Gerasimenko to my scale comparison of comets and asteroids

(Web Page; Mon Oct 05 15:30:00 CDT 2015)

I'm not sure how I missed this, but last December the Rosetta mission posted a color portrait of comet Churuymov-Gerasimenko. It's possible that I missed it because the comet is incredibly gray, having virtually no color variation anywhe...

Description: Having found a color photo of the comet, I finally added Churyumov-Gerasimenko to my scale comparison of comets and asteroids visited by spacecraft.

8. Hayabusa2 launches toward asteroid rendezvous

(Web Page; Tue May 29 09:56:00 CDT 2018)

Last night was an exciting one on Twitter as I watched with the rest of the world while Hayabusa2 and a fleet of mini-satellites launched on an H-IIA rocket. Here is an artist's concept: (I love JAXA's cartoon depictions of their miss...

Description: Hayabusa2 successfully launched on December 3, 2014 at 04:22 UTC, and embarked on its interplanetary journey about two hours later. During the launch, cameras captured video of the spacecraft fairing separation.

9. Whose stars? Our heritage of Arabian astronomy

(Web Page; Fri Dec 21 09:05:00 CST 2018)

Most accounts of the history of astronomy present a linear development from Greek polymaths to Muslim scholars and then enlightened Europeans. This is not one of them. The modern night sky is messy, awash with the remnants of cultural i...

Description: For UNESCO World Arabic Language Day, Danielle Adams reconstructs the Arabian night sky.