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What does it mean in astrophysics for X-rays to be reflected? by Thomas Womack
Various articles about black holes talk about X-rays emitted near the event horizon 'reflecting off the accretion disc'. What kind of material is it that can...
Yesterday 08:59 PM
by Martin Hardcastle Go to last post
1 99 Research
Moon sees first cotton-seed sprout by Jan Panteltje
Moon sees first cotton-seed sprout http://chinaplus.cri.cn/news/china/9/20190115/236159.html quote a canister installed on the lander of the Chang'e-4...
Yesterday 06:22 PM
by Jan Panteltje Go to last post
0 1 Astronomy Misc
Science Proves Its Critics Wrong by Quadibloc
This news article https://nationalpost.com/news/canada/people-with-extreme-anti-science-views-know-the-least-but-think-they-know-the-most-study is...
Yesterday 04:41 PM
by Jibini Kula Tumbili Kujisalimisha Go to last post
1 65 Amateur Astronomy
The US government shutdown is almost certainly delaying SpaceX'scrucial launch - MIT Technology Review by William Elliot[_4_]
https://www.technologyreview.com/the-download/612745/the-us-government-shutdown-is-almost-certainly-delaying-spacexs-crucial-launch/
(Multi-page thread 1 2)
Yesterday 10:30 AM
by Fred J. McCall[_3_] Go to last post
19 260 Policy
Do "starshades" make sense? by RichA[_6_]
It's mentioned in this speculative space telescope video. The idea is to create an eclipse using a large, calculated shade which would allow a star to be...
(Multi-page thread 1 2)
Yesterday 09:00 AM
by Gerald Kelleher Go to last post
10 316 Amateur Astronomy
HOW INDIA GAVE US THE ZERO by Frank[_8_]
On 1/11/2019 3:16 AM, FBInCIAnNSATerroristSlayer wrote: On 1/8/2019 7:41 AM, Frank wrote: On 1/5/2019 3:23 PM, FBInCIAnNSATerroristSlayer wrote: ...
Yesterday 08:32 AM
by FBInCIAnNSATerroristSlayer Go to last post
1 305 Astronomy Misc
"Steam powered" spacecraft by RichA[_6_]
https://phys.org/news/2019-01-steam-propelled-spacecraft-prototype-theoretically-explore.html
Yesterday 05:43 AM
by RichA[_6_] Go to last post
2 199 Amateur Astronomy
A Ditch Not a Wall Does it All. by Double-A[_4_]
On Thursday, December 27, 2018 at 3:41:39 PM UTC-8, Herbert Glazier wrote: On Thursday, December 27, 2018 at 2:11:25 PM UTC-8, Double-A wrote: On...
Yesterday 01:22 AM
by Herbert Glazier Go to last post
9 483 Misc
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