Significant concepts: light pollution, moon, amateur astronomer, star party, milky way, observatory, university, night sky, deep sky, space telescope, solar system, web site.

Most relevant domains

Most relevant domains based on cumulative page relevance to the topic as defined by example links and on the number of relevant domains linking to them.

domain	rank	page count	visit count	link count	relevance	popularity
http://caltech.edu/	1	324	342	2135	0.99	2.54	caltech.edu
http://harvard.edu/	2	218	228	5263	0.98	3.32	harvard.edu
http://space.com/	3	277	277	2058	0.99	2.38	space.com
http://skyandtelescope.com/	4	265	268	1477	0.99	2.26	skyandtelescope.com
http://youtube.com/	5	206	256	4348	0.98	3.55	youtube.com
http://aip.org/	6	290	295	628	0.99	1.98	aip.org
http://esa.int/	7	245	260	1983	0.98	2.33	esa.int
http://noao.edu/	8	262	277	899	0.99	2.1	noao.edu
http://nasa.gov/	9	130	145	6701	0.97	4.36	nasa.gov
http://eso.org/	10	174	176	2189	0.99	2.5	eso.org

Atext

Most frequent phrases in anchor texts of links found in this topical graph .

atext	count	semantic flow ™
read more	1962	77.85
news	1278	67.11
research	1003	56.5
events	863	46.93
here	634	37.45
more	583	36.63
astronomy	420	27.56
google eclipse map	327	24.42
resources	430	23.81
science	435	23.69

Keyword ideas

Common word stems found in on-topic page titles.

word
astronomi
univers
scienc
physic
space
telescop
depart
star
research
news

Popular pages

On-topic pages with highest topical PageRank.

title / url
NASA Airborne Astronomy Ambassador Program | SETI Institute https://www.seti.org/aaa	www.seti.org
Andy Lawrence | School of Physics and Astronomy https://www.ph.ed.ac.uk/people/andy-lawrence	www.ph.ed.ac.uk
--Universe Forum-- https://www.cfa.harvard.edu/seuforum/	www.cfa.harvard.edu
Learning Science | Citizen Science https://cosmoquest.org/x/about-cosmoquest/the-making-of/learn-science/	cosmoquest.org
international astronomical union u2013 iau http://www.iau2006.org/	www.iau2006.org
XMM-Newton SOC Home Page - Cosmos https://www.cosmos.esa.int/web/xmm-newton	www.cosmos.esa.int
About - The University of Sheffield https://www.sheffield.ac.uk/about	www.sheffield.ac.uk
Crafts for Kids - EnchantedLearning.com http://www.enchantedlearning.com/crafts/	www.enchantedlearning.com
JWST / Space Science / Our Activities / ESA http://www.esa.int/Our_Activities/Space_Science/JWST	www.esa.int
National Optical Astronomy Observatory https://www.noao.edu/	www.noao.edu

Popular prospect pages

On-topic pages with highest topical PageRank having a few outgoing links and domains.

title / url	PR	relevance	links	rel links	external links	external domains	referring domains	external backlinks
Andy Lawrence | School of Physics and Astronomy https://www.ph.ed.ac.uk/people/andy-lawrence	0.34	1	50	24	23	4	0	0	www.ph.ed.ac.uk
XMM-Newton SOC Home Page - Cosmos https://www.cosmos.esa.int/web/xmm-newton	0.32	0.99	222	76	72	6	2	2	www.cosmos.esa.int
National Optical Astronomy Observatory https://www.noao.edu/	0.31	1	34	23	10	8	0	0	www.noao.edu
e-MERLIN/VLBI National Facility http://www.merlin.ac.uk/	0.3	0.99	27	7	6	4	2	2	www.merlin.ac.uk
Astronomy & Geophysics | Oxford Academic https://academic.oup.com/astrogeo	0.29	1	72	24	7	4	1	1	academic.oup.com
Projects - Astronomy PhD - Wiki Service https://www.wiki.ed.ac.uk/display/APHD/Projects	0.29	0.93	65	22	19	8	2	2	www.wiki.ed.ac.uk
News u2014 English http://www.aip.de/en	0.29	0.98	112	47	47	6	1	1	www.aip.de
Student and alumni profiles | School of Physics and Astronomy | University of Leeds https://physicalsciences.leeds.ac.uk/student-and-alumni-profiles/38/undergraduate/	0.29	1	85	37	11	10	0	0	physicalsciences.leeds.ac.uk
Indiana University astrobiologist named planetary protection officer at NASA: News at IU: Indiana University https://news.iu.edu/stories/2018/01/iub/releases/18-lisa-pratt-planetary-protection-office	0.28	0.96	80	33	33	6	0	0	news.iu.edu
Department of Physics & Astronomy http://www.uwyo.edu/physics/	0.28	1	102	48	6	6	2	2	www.uwyo.edu

Hubs

Pages with most links towards other likely on-topic pages.

url	count	PR	score	semantic flow ™	relevance	on topic	links	rel links	external links	external domains	referring domains	external backlinks
https://room.eu.com/content	718	0.16	0.99	33.61	1	yes	842	773	0	0	0	0	room.eu.com
https://en.wikipedia.org/wiki/Moon	692	0.15	0.93	19.01	0.95	yes	1696	855	294	68	1	1	en.wikipedia.org
https://en.wikipedia.org/wiki/Astronomy	578	0.15	0.96	26.08	1	yes	1141	584	95	43	0	0	en.wikipedia.org
http://cdsweb.u-strasbg.fr/astroWeb/astroweb/dept.html	427	0.15	0.99	22.05	1	yes	683	590	587	464	0	0	cdsweb.u-strasbg.fr
https://en.wikipedia.org/wiki/List_of_astronomical_observatories	413	0.16	0.93	21.91	1	yes	1315	629	15	14	0	0	en.wikipedia.org
http://whitepages.amsky.com/	404	0.16	1	21.5	1	yes	778	673	580	532	1	1	whitepages.amsky.com
http://www.seasky.org/astronomy/astronomy-clubs.html	351	0.16	0.99	22.02	1	yes	423	402	376	371	0	0	www.seasky.org
http://cleardarksky.com/csk/prov/California_charts.html	335	0.16	0.95	20.16	1	yes	742	381	208	151	1	1	cleardarksky.com
http://astronomy.swin.edu.au/~agraham/news.html	294	0.19	0.96	21.28	1	yes	673	302	276	201	0	0	astronomy.swin.edu.au
http://sites.nationalacademies.org/BPA/BPA_050603	271	0.21	0.97	21.57	1	yes	346	273	0	0	1	1	sites.nationalacademies.org

Domains with most linking domains

Relevant domains with most other relevant domains linking to them.

domain	count	semantic flow ™
http://youtube.com/	463	53.97	youtube.com
http://nasa.gov/	411	277.46	nasa.gov
http://facebook.com/	221	26.46	facebook.com
http://harvard.edu/	183	148.69	harvard.edu
http://wikipedia.org/	176	69.98	wikipedia.org
http://arxiv.org/	142	79.58	arxiv.org
http://caltech.edu/	124	25.44	caltech.edu
http://eso.org/	107	27.02	eso.org
http://space.com/	104	31.14	space.com
http://esa.int/	93	19.26	esa.int