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Transit of Mercury, live (IAC - Instituto de Astrofísica de Canarias)

Edit Public Technologies 06 May 2016
(Source. IAC - Instituto de Astrofísica de Canarias) ... Although it will be completely visible from throughout Spain, it will not be possible to observe it without using a telescope because of the planets small angular size ... Mercury is small. It's diameter is 4.879.4 km, little more than one third that of the Earth ... Its angular diameter, a maximum of 13 arc seconds is five times smaller than we can resolve with the naked eye ... (noodl....

A Fine Occultation of Aldebaran Spans the Atlantic

Edit Universe Today 20 Jan 2016
Less than a decade ago, a bright star occultation by the Moon -- especially one occurring in the depths of northern hemisphere winter -- would have grabbed the interest of at most a handful of intrepid specialist observers ... Aldebaran does indeed have a very tiny apparent angular diameter of about 45 mas (that's milliarcseconds) as seen from the Earth, too small to measure during an occultation ... "It's gone" Occultation of Aldebaran ... ....

Watch the Moon Occult Aldebaran for Europe Wednesday Night

Edit Universe Today 21 Dec 2015
An early Christmas present is on tap this week for observers in Europe, the United Kingdom and northern Asia, as the waxing gibbous Moon occults (passes in front of) the bright star Aldebaran on the evening of Wednesday December 23rd ... Usually, the brilliant Moon would wash out any star near Full, but Aldebaran should remain visible, even during egress ... Some stars exhibit a tiny angular diameter, apparent only during occultations ... ....

The Moon Hits a Cosmic Bull's Eye Tonight: How to See It

Edit Yahoo Daily News 04 Sep 2015
If you live in the eastern-third of the United States or southeast Canada and your local skies are clear on tonight (Sept. 4), take a good close look at the rising moon, which has a celestial date with a star this evening ... [Video ... When Aldebaran reappeared from a similar occultation in 1978, astronomers at Iowa State University used high-speed photometry to confirm that this star has an apparent angular diameter of 0.02 arc second....

See Venus at Its Most Brilliant Tonight

Edit Yahoo Daily News 11 Jul 2015
This is the month to observe the planet Venus at its best. Last week, we saw a close conjunction between Venus and Jupiter, and next week we will see a close conjunction between Venus and the crescent moon ... [The 10 Weirdest Facts About Venus] ... 15 ... Its distance from Earth will be 0.448 astronomical units (42 million miles or 67 million kilometers), its angular diameter will be 37 arc seconds and its disk will be 27 percent illuminated....

Twisted magnetic field in galaxy IC 342 (Max-Planck-Gesellschaft zur Förderung der Wissenschaften eV)

Edit Public Technologies 18 Jun 2015
(Source. Max-Planck-Gesellschaft zur Förderung der Wissenschaften eV) Researchers hope for clues to the formation of Milky Way systems ... "Our observations can help to discover answers to the question of how galaxies evolve and develop further," says project leader Rainer Beck ... The field size is 0.75°x0.75°, the angular diameter of 0.5° for IC 342 is comparable to that of the full moon in the sky ... Jansky Very Large Array (VLA)....

Hubble Finds Giant Halo Around the Andromeda Galaxy (STScI - Space Telescope Science Institute)

Edit noodls 07 May 2015
(Source. STScI - Space Telescope Science Institute) May 7, 2015 01.00 PM (EDT). May 7, 2015 ... But if you could see the huge bubble of hot, diffuse plasma surrounding it, it would appear 100 times the angular diameter of the full Moon! The gargantuan halo is estimated to contain half the mass of the stars in the Andromeda galaxy itself ... Illustration Credit....

Cold cosmic mystery solved (University of Hawai?i at Manoa)

Edit noodls 20 Apr 2015
(Source. University of Hawai?i at Manoa) University of Hawaiʻi at Mānoa. Contact.. Istvan Szapudi, (808) 956-6196. Astronomer, Institute for Astronomy. Louise Good, (808) 381-2939. Media Contact, Institute for Astronomy. Posted. Apr 20, 2015 ... Now, a team of astronomers led by Dr ... Now think of the void as a hill ... The angular diameter of the vast supervoid aligned with the Cold Spot, which exceeds 30 degrees, is marked by the white circles....

Manoa: Cold cosmic mystery solved (The University of Hawaii System)

Edit noodls 20 Apr 2015
(Source. The University of Hawaii System) University of Hawaiʻi at Mānoa. Contact.. Istvan Szapudi, (808) 956-6196. Astronomer, Institute for Astronomy. Louise Good, (808) 381-2939. Media Contact, Institute for Astronomy. Posted. Apr 20, 2015 ... Now, a team of astronomers led by Dr ... Now think of the void as a hill ... The angular diameter of the vast supervoid aligned with the Cold Spot, which exceeds 30 degrees, is marked by the white circles....

CLOSE ENCOUNTERS: COMET SIDING SPRING SEEN NEXT TO MARS (NASA - The National Aeronautics and Space Administration)

Edit noodls 24 Oct 2014
(Source. NASA - The National Aeronautics and Space Administration) ... EDT October 19, 2014 ... 18, 8.06 a.m. EDT to Oct. 19, 11.17 p.m. EDT ... EDT on Oct. 18. The Mars and comet images have been added together to create a single picture to illustrate the angular separation, or distance, between the comet and Mars at closest approach. The separation is approximately 1.5 arc minutes, or one-twentieth of the angular diameter of the full Moon ... (noodl....

Ancient Greek Bronze Machine Predicted Multiple Features of Eclipses Embargoed until July 30th 2014, at ...

Edit San Francisco Chronicle 26 Jul 2014
its ability to predict eclipses and many of their characteristics, such as time-of-day, colour, magnitude, direction of shadow obscuration, angular diameter of the Moon and distance North or South of the lunar node ... cycle of the diameter of the Moon when seen from Earth—which is one of the determinants of the appearance and duration of an eclipse....

>Ancient Greek Bronze Machine Predicted Multiple Features of Eclipses Embargoed until July 30th 2014, at ...

Edit Seattle Post 26 Jul 2014
its ability to predict eclipses and many of their characteristics, such as time-of-day, colour, magnitude, direction of shadow obscuration, angular diameter of the Moon and distance North or South of the lunar node ... cycle of the diameter of the Moon when seen from Earth—which is one of the determinants of the appearance and duration of an eclipse....

How Many Galaxies Are There?

Edit Space 01 Apr 2014
The XDF is a small fraction of the angular diameter of the full Moon. Image released September 25, 2012. Credit. NASA, ESA, G. Illingworth, D. Magee, and P. Oesch (University of California, Santa Cruz), R ... Another problem is the limitation of our instruments. To get the best view, a telescope needs to have a large aperture (the diameter of the main mirror or lens) and be located above the atmosphere to avoid distortion from Earth's air ... ....
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