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Feb
19
awarded  Custodian
Feb
19
reviewed Reviewed What are the azimuths of the planets' orbits?
Feb
18
reviewed Leave Open How early/late is the human race as intelligent life in the universe/milkyway?
Feb
17
awarded  Nice Answer
Feb
17
reviewed Leave Open The effect of gravitational wave is like tidal forces?
Feb
17
reviewed Reviewed What did LIGO Actually See? (Gravitational waves discovery)
Feb
17
revised Could gravity waves be used to confirm the existence of a ninth planet?
corrected spelling
Feb
16
answered Could gravity waves be used to confirm the existence of a ninth planet?
Feb
16
reviewed Approve gravitational-waves tag wiki excerpt
Feb
16
reviewed No Action Needed Could gravity waves be used to confirm the existence of a ninth planet?
Feb
1
comment Where's the Prime Meridian of celestial coordinates
Also, you can think on where the Sun crosses the Equator from South to North
Feb
1
comment What is the distance of earth from 7 planets, moon and sun at a point of time?
There are plenty of programs named at freeware.intrastar.net/planetarium.htm
Feb
1
comment What is the distance of earth from 7 planets, moon and sun at a point of time?
still... Pluto is not a planet. It is a dwarf planet like Eris (which is bigger than Pluto), Makemake, Haumea, and Ceres en.wikipedia.org/wiki/Dwarf_planet
Feb
1
comment What is the distance of earth from 7 planets, moon and sun at a point of time?
... which 9 planets? There are only 7 besides Earth...
Feb
1
answered What is the distance of earth from 7 planets, moon and sun at a point of time?
Nov
22
awarded  Yearling
Sep
26
awarded  Nice Answer
Aug
28
reviewed Approve Sun's apparent motion above the arctic circle during summer solstice
Aug
15
comment Did atoms in human body indeed come from stars?
@RobJeffries ok, "explosions and solar winds" would be more correct, but less comprensible. The point of the answer is that all nuclei heavier than hidrogen and helium (and some diminute amount of other up to lithum) come from reactions on stars. All your carbon, oxigen and nitrogen (nuclei) come from stars.
Aug
14
comment Did atoms in human body indeed come from stars?
@RobJeffries where else do you think heavy elements can come from?