May 21st, 2012 by admin
- January 3, 4 – Quadrantids Meteor Shower. The Quadrantids are an above average shower, with up to 40 meteors per hour at their peak. The shower usually peaks on January 3 & 4, but some meteors can be visible from January 1 – 5. The near first quarter moon will set shortly after midnight, leaving dark skies for what should be a good show. Best viewing will be from a dark location after midnight. Look for meteors radiating from the constellation Bootes.
- January 9 – Full Moon. The Moon will be directly opposite the Earth from the Sun and will be fully illuminated as seen from Earth. This phase occurs at 07:30 UTC.
- January 23 – New Moon. The Moon will be directly between the Earth and the Sun and will not be visible from Earth. This phase occurs at 07:39 UTC.
- February 7 – Full Moon. The Moon will be directly opposite the Earth from the Sun and will be fully illuminated as seen from Earth. This phase occurs at 21:54 UTC.
- February 20 – March 12 – Best Chance to see Mercury. The planet Mercury will be far enough from the Sun’s glare to be visible shortly after sunset. Mercury will reach greatest elongation from the Sun on March 5, reaching a relatively bright magnitude of about -1. This will be your best chance to see the planet this year.
- February 21 – New Moon. The Moon will be directly between the Earth and the Sun and will not be visible from Earth. This phase occurs at 22:35 UTC.
- March 3 – Mars at Opposition. The red planet will be at its closest approach to Earth and its face will be fully illuminated by the Sun. This is the best time to view and photograph Mars.
- March 8 – Full Moon. The Moon will be directly opposite the Earth from the Sun and will be fully illuminated as seen from Earth. This phase occurs at 09:39 UTC.
- March 14 – Conjunction of Venus and Jupiter. The two brightest planets in the sky will be within 3 degrees of each other in the evening sky. On March 25 and 25, the crescent Moon will be near the two planets, creating a dazzling evening spectacle.
- March 20 – March Equinox. The March equinox occurs at 05:14 UTC. The Sun will shine directly on the equator and there will be nearly equal amounts of day and night throughout the world. This is also the first day of spring (vernal equinox) in the northern hemisphere and the first day of fall (autumnal equinox) in the southern hemisphere.
- March 22 – New Moon. The Moon will be directly between the Earth and the Sun and will not be visible from Earth. This phase occurs at 14:37 UTC.
- April 6 – Full Moon. The Moon will be directly opposite the Earth from the Sun and will be fully illuminated as seen from Earth. This phase occurs at 19:19 UTC.
- April 15 – Saturn at Opposition. The ringed planet will be at its closest approach to Earth and its face will be fully illuminated by the Sun. This is the best time to view and photograph Saturn and its moons.
- April 21 – New Moon. The Moon will be directly between the Earth and the Sun and will not be visible from Earth. This phase occurs at 07:18 UTC. Read the rest of this entry »
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August 27th, 2007 by admin
The table below lists every solar eclipse from 2001 through 2010. Click on the eclipse Date to see a map of an eclipse. Click on the Region of Eclipse Visibility to see a detailed description of an eclipse.
| Solar Eclipses: 2001 – 2010 |
| Date |
Eclipse Type |
Saros |
Eclipse Magnitude |
Central Duration |
Geographic Region of Eclipse Visibility |
| 2001 Jun 21 |
Total |
127 |
1.050 |
04m57s |
e S. America, Africa
[Total: s Atlantic, s Africa, Madagascar] |
| 2002 Jun 10 |
Annular |
137 |
0.996 |
00m23s |
e Asia, Australia, w N. America
[Annular: n Pacific, w Mexico] |
| 2003 May 31 |
Annular |
147 |
0.938 |
03m37s |
Europe, Asia, nw N. America
[Annular: Iceland, Greenland] |
| 2004 Apr 19 |
Partial |
119 |
0.736 |
- |
Antarctica, s Africa |
| 2005 Apr 08 |
Hybrid |
129 |
1.007 |
00m42s |
N. Zealand, N. & S. America
[Hybrid: s Pacific, Panama, Colombia, Venezuela] |
| 2006 Mar 29 |
Total |
139 |
1.052 |
04m07s |
Africa, Europe, w Asia
[Total: c Africa, Turkey, Russia] |
| 2007 Mar 19 |
Partial |
149 |
0.874 |
- |
Asia, Alaska |
| 2008 Feb 07 |
Annular |
121 |
0.965 |
02m12s |
Antarctica, e Australia, N. Zealand
[Annular: Antarctica] |
| 2009 Jan 26 |
Annular |
131 |
0.928 |
07m54s |
s Africa, Antarctica, se Asia, Australia
[Annular: s Indian, Sumatra, Borneo] |
| 2010 Jan 15 |
Annular |
141 |
0.919 |
11m08s |
Africa, Asia
[Annular: c Africa, India, Malymar, China] |
Geographic abbreviations: n = north, s = south, e = east, w = west, c = central
Category: Astronomy |
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August 27th, 2007 by admin
The table below lists every lunar eclipse from 2001 through 2010. Click on the eclipse Date to see a map and diagram of an eclipse. Click on the Region of Eclipse Visibility to see a detailed description of an eclipse.
| Lunar Eclipses: 2001 – 2010 |
| Date |
Eclipse
Type |
Saros |
Umbral1
Mag. |
Eclipse2
Duration |
Geographic Region of
Eclipse Visibility2 |
| 2001 Jan 09 |
Total |
134 |
1.195 |
03h17m
01h02m |
e Americas, Europe, Africa, Asia |
| 2001 Jul 05 |
Partial |
139 |
0.499 |
02h40m |
e Africa, Asia, Aus., Pacific |
| 2001 Dec 30 |
Penumbral |
144 |
-0.110 |
- |
e Asia, Aus., Pacific, Americas |
| 2002 May 26 |
Penumbral |
111 |
-0.283 |
- |
e Asia, Aus., Pacific, w Americas |
| 2002 Jun 24 |
Penumbral |
149 |
-0.788 |
- |
S. America, Europe, Africa, c Asia, Aus. |
| 2002 Nov 20 |
Penumbral |
116 |
-0.222 |
- |
Americas, Europe, Africa, e Asia |
| 2003 May 16 |
Total |
121 |
1.134 |
03h15m
00h53m |
c Pacific, Americas, Europe, Africa |
| 2003 Nov 09 |
Total |
126 |
1.022 |
03h32m
00h24m |
Americas, Europe, Africa, c Asia |
| 2004 May 04 |
Total |
131 |
1.309 |
03h24m
01h16m |
S. America, Europe, Africa, Asia, Aus. |
| 2004 Oct 28 |
Total |
136 |
1.313 |
03h39m
01h21m |
Americas, Europe, Africa, c Asia |
| 2005 Apr 24 |
Penumbral |
141 |
-0.139 |
- |
e Asia, Aus., Pacific, Americas |
| 2005 Oct 17 |
Partial |
146 |
0.068 |
00h58m |
Asia, Aus., Pacific, North America |
| 2006 Mar 14 |
Penumbral |
113 |
-0.055 |
- |
Americas, Europe, Africa, Asia |
| 2006 Sep 07 |
Partial |
118 |
0.189 |
01h33m |
Europe, Africa, Asia, Aus. |
| 2007 Mar 03 |
Total |
123 |
1.238 |
03h42m
01h14m |
Americas, Europe, Africa, Asia |
| 2007 Aug 28 |
Total |
128 |
1.481 |
03h33m
01h31m |
e Asia, Aus., Pacific, Americas |
| 2008 Feb 21 |
Total |
133 |
1.111 |
03h26m
00h51m |
c Pacific, Americas, Europe, Africa |
| 2008 Aug 16 |
Partial |
138 |
0.813 |
03h09m |
S. America, Europe, Africa, Asia, Aus. |
| 2009 Feb 09 |
Penumbral |
143 |
-0.083 |
- |
e Europe, Asia, Aus., Pacific, w N.A. |
| 2009 Jul 07 |
Penumbral |
110 |
-0.909 |
- |
Aus., Pacific, Americas |
| 2009 Aug 06 |
Penumbral |
148 |
-0.661 |
- |
Americas, Europe, Africa, w Asia |
| 2009 Dec 31 |
Partial |
115 |
0.082 |
01h02m |
Europe, Africa, Asia, Aus. |
| 2010 Jun 26 |
Partial |
120 |
0.542 |
02h44m |
e Asia, Aus., Pacific, w Americas |
| 2010 Dec 21 |
Total |
125 |
1.262 |
03h29m
01h13m |
e Asia, Aus., Pacific, Americas, Europe |
Geographic abbreviations (used above): n = north, s = south, e = east, w = west, c = central
Footnotes
1Umbral magnitude is the fraction of the Moon’s diameter obscured by Earth’s Umbra. For penumbral eclipses, the umbral magnitude is always less than 0. For partial eclipses, the umbral magnitude is always greater than 0 and less than 1. For total eclipses, the umbral magnitude is always greater than or equal to 1. 2Eclipse Duration is the duration of a partial eclipse. If the eclipse is total, the duration of totality is given in bold.
3Geographic Region of Eclipse Visibility is the portion of Earth’s surface where a lunar eclipse can be seen.

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September 25th, 2006 by admin
Solar X-ray Flux
This GOES X-ray flux plot contains 5 minute averages of solar X-ray output in the 1-8 Angstrom (0.1-0.8 nm) and 0.5-4.0 Angstrom (0.05-0.4 nm) passbands. Data from both operational GOES satellites are included. Some data dropouts will occur during satellite eclipses. SEC alerts are issued at the M5 (5x10E-5 Watts/m2) and X1 (1x10E-4 Watts/m2) levels, based upon 1-minute data. Large X-ray bursts cause short wave fades for HF propagation paths through the sunlit hemisphere. Some large flares are accompanied by strong solar radio bursts that may interfere with satellite downlinks.
This page updates dynamically every 5 minutes.
Satellite Environment Plot
This plot combines satellite and ground-based data in an attempt to present an overview of the current satellite envionment (particularly at geosynchronous altitude). Although these data are of interest to the satellite community, they do not include all parameters and energy ranges known to be associated with satellite anomalies.
This page updates dynamically every 5 minutes.
Category: Astronomy |
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July 28th, 2006 by admin
Filamentary structure in 3D. Image credit: SubaruClick to enlarge
Astronomers have used the Subaru and Keck telescopes to discover gigantic filaments of galaxies stretching across 200 million light-years in space. These filaments, formed just 2 billion years after the Big Bang, are the largest structures ever discovered in the Universe. The filaments contain at least 30 huge concentrations of gas, each of which contains 10x the mass of the Milky Way.
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July 28th, 2006 by admin
Galaxy NGC 908. Image credit: ESOClick to enlarge
This photograph of galaxy NGC 908 was taken with the European Southern Observatory’s Very Large Telescope. This spiral galaxy was first discovered in 1786 by William Herschel, and is considered a starburst galaxy. Clusters of young, massive stars pepper its spiral arms indicating regions of furious star formation. NGC 908 must have had a recent encounter with another galaxy; the gravitational interaction between the galaxies caused gas clouds to collapse, igniting star formation.
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