Posts Tagged ‘july’

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Astronomy Events – July 2012

June 30, 2012

by yaska77

The year marches ever onward and already July is upon us! Where is the year going!?  Noted below we’ve listed some interesting upcoming Astronomy Events for July, with a little something for everyone so keep watching the skies!

Sunday 1st July – Tonight the Moon is at Perigee at a distance of 362,360 km and Mercury is at Greatest Eastern Elongation, so may be visible low down in the western sky soon after sunset

Tuesday 3rd July - Tonight’s Full Moon is also known as the Hay Moon, Buck Moon and Thunder Moon

Thursday 5th July – The Earth is at Aphelion today, the point in its orbit where it is farthest from the Sun

Sunday 8th July – Double star Albireo is a great sight through good binoculars or a telescope, and you can really see the difference in colour between the two stars

Shown at 22:00 UTC (23:00 BST) on 8th July, double star Albireo can be located within the “Summer Triangle” (click to enlarge) – Credit: Sky-Watching/Stellarium

Caught within the imagined lines of the “Summer Triangle” (an asterism that sits across the band of the Milky Way made by linking the stars Deneb, Vega and Altair), look high up towards east-southeast before midnight and see if you can spot it!

Shining brightly in front of a clear starfield, double star Albireo is a beautiful sight to see and image (click to enlarge) – Credit: Sky-Watching/A.Welbourn

Wednesday 11th July – Last Quarter Moon

Friday 13th July - The Moon is at Apogee, 404,780 km

Sunday 15th July - Early risers may catch a sight of the Lunar occultation of Jupiter as it skims behind the top of the waning crescent Moon as it rises (see below). Beginning at 01:00 UTC (02:00 BST) it will continue until around 02:30 UTC (03:30 BST)

With its moons forming a neat line, Jupiter appearing so close to the waning crescent Moon (shown at 02:30 UTC/03:30 BST) should be a great sight and a nice photo target (click to enlarge) – Credit: Sky-Watching/Stellarium

Observers from the south east UK will see the whole occultation, but the further north and west you are the lower the Moon will appear relative to Jupiter, so the planet will either graze, or completely miss the top of the Moon

Almost directly below will be the bright star Aldebaran (shining brightly) and the Pleiades cluster leads them all across the sky (see below). Should be a great sight if you’ve got some binoculars or a telescope, and a potential target for some great images!

A great celestial grouping precedes sunrise on 15th July, and potentially a great photo target! (click to enlarge) – Credit: Sky-Watching/Stellarium

Thursday 19th July – The New Moon today rises just before (and sets just after) the Sun, so a good time to observe some of the lovely deep sky objects on offer, like globular cluster M15 (in Pegasus) or the Dumbbell Nebula which can be found just below Albireo (within the Summer Triangle)

Saturday 21st July - The Pleiades, Jupiter and Venus all form a line following each other across the sky early this morning. Look towards the east at 02:30 UTC (03:30 BST) as Jupiter will also be close to the Hyades open cluster

Monday 23rd July – With the Sun still so high in the daytime sky I’m hoping July will provide some nice clear days, so I can start my project of imaging the Sun daily to catch sunspot activity

Taken early evening on 13th June (using a Canon EOS 550D, a 300mm lens and a homemade solar filter) the sunspots captured are nicely defined (click to enlarge) – Credit: Sky-Watching/A.Welbourn

With a solar filter attached to a 300mm lens I’ve already captured some clear sunspots, so I’m eager to start cataloguing their apparent movement across the face of the Sun over consecutive days. I’m praying for some decent weather!

Thursday 26th July – First Quarter Moon

Saturday 28th July - The planet Mercury is in Inferior Conjunction

Sunday 29th July – Moon is at Perigee (367,315 km)

Planets visible this month:

Mercury
Venus
Mars
Saturn
Jupiter
Uranus
Neptune

Remember, it can take your eyes up to 20 minutes to become properly dark adapted, and anything up to an hour for a telescope to reach ambient temperature outside (to ensure the best image), so give yourself plenty of time to get set up!

To make it easier to find this list of astronomical happenings you can also locate it in the “Monthly Guide” section in the menu bar to the right. Handy! :)

Guide images created with Stellarium

Archive:
Astronomy Events – June 2012
Astronomy Events – May 2012
Astronomy Events – April 2012

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Happy Birthday Neptune!

July 12, 2011

by foo77

Neptune has just completed its first orbit around the sun since its discovery on September 23rd 1846. With the planet being 2.8 billion miles from the sun that’s an astonishing 165 years to do a full orbit.

Sky Watching - Neptune covered by the bright blue methane clouds

Neptune covered by the bright blue methane clouds that whip around at speeds measuring more than 994mph - Credit: NASA

Neptune is the first planet to be discovered using mathematics. French astronomer Urbain Le Verrier noticed irregularities in the motions of other planets, and from these perturbations he calculated that there must be an 8th planet lurking out beyond Uranus.

We know there are 13 moons which orbit Neptune, with the largest being Triton, but little else is know about the planet as it has only been photographed once close range, on the Voyager 2 mission in 1989. A future mission to Neptune – The Neptune Orbiter Mission has been removed from the official NASA mission list.

sky-watching.co.uk - Skymap of Neptune located at the time of discovery

Skymap of Neptune located at the time of discovery - CREDIT: Starry Night Software

Neptune will be returning to the exact point in its orbit where it was first discovered, just north of Saturn in the constellation Aquarius.

It is back in Aquarius tonight at 22:27 Universal Time (GMT).

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Atlantis to dock with ISS – Watch on NASA TV

July 10, 2011

by yaska77

NASA’s Atlantis is on approach to the Internation Space Station (ISS) as the shuttle prepares to dock for the last ever time on Sunday (at 11:07 EDT (15:07 GMT/16:07 BST).

Video Streaming iPhone App from Ustream

The shuttle is performing a “back-flip” manoeuvre so ISS astronauts can take high resolution digital camera stills of the shuttle’s thermal protection heat shields. This will enable technicians on the ground to determine if any damage was caused during launch.

Docking may not be covered live on NASA TV, but the hatch opening is scheduled at 13:19 EDT (17:19 GMT/18:19 BST), although it could be earlier. It all looks to be happening so slowly, but remember the ISS and Atlantis are currently travelling at around 17,500mph! What a beautiful sight, the last time we’ll ever see this live.

You can also watch the last ever shuttle “spacewalk” live on 12th July starting around 09:10 EDT (13:10 GMT/14:10 BST), using the above player or…

View NASA TV on the external site here

You can view the full STS-135 NASA TV shedule here

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First video of comet striking sun

July 10, 2011

by tte-77

NASA Goddard Spaceflight Center have released the video of what happened when a comet swung in toward our sun and appeared to strike it earlier this year.

See the comet come in from below, and see the “splash” on the right side of the screen? You can’t actually see the comet hit the sun because the impact is blocked out by the red occulting disk that lets us see the other structures in the sun’s corona, or outer atmosphere.

This image was obtained by NASA’s SDO (Solar Dynamics Observatory), which captured a 20-minute movie of the comet streaking directly in front of the sun.

NASA says scientists love this movie since it’s a “first,” and they also believe additional analysis of the data might hold more clues about the fate of the comet. Most likely, given the intense heat and radiation, the comet simply evaporated away completely.

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NASA’s Atlantis launches into history

July 9, 2011

by yaska77

The last ever launch of NASA’s space shuttle blasted STS-135 Atlantis into orbit yesterday. Weather concerns had worried mission controllers throughout the long countdown, but as the lift-off time approached the weather broke and all teams polled go for launch.

STS-135 Atlantis spears skyward and makes history (Click to supersize) - Credit: NASA/Bill Ingalls

The 135th and final space shuttle mission lifted off from Kennedy Space Center at 11:29 EDT (15:29 GMT/16:29 BST) on Friday 8th July.

On its 12 day mission Atlantis will deliver 3.5 tonnes of supplies to the ISS.

The thousands of spectators lining the roads and beaches around KSC began cheering as the countdown clock got closer to lift-off, but at T-minus 31 seconds the timer stopped.

During the 3 minute delay NASA technicians visually checked the complete retraction of the gaseous vent arm (which failed to automatically signify control of complete retraction), before the countdown resumed.

STS-134 Endeavour photographed during the "back-flip" manoeuvre (Click to supersize) - Credit: NASA

Today the crew have carried out the first stage of visual inspections on the wing heat shields using the orbiter’s robotic arm, with the second stage “back-flip manoeuvre” on approach to the ISS due before docking on Sunday (at 11:07 EDT (15:07 GMT/16:07 BST).

NASA Technicians will then review the images taken and launch footage video to determine if any damage to the heat tiles has occurred.

When Atlantis returns to Earth it will signal the end of the 30 year space shuttle program, with all 3 remaining shuttles of the orbiter fleet being retired to museums.

Docking may not be covered live on NASA TV, but the hatch opening is scheduled at 13:19 EDT (17:19 GMT/18:19 BST)

You can view the full STS-135 NASA TV shedule here

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