Astronomy Picture of the Day . ... Credit Copyright: Noel Munford (Palmerston North Astronomical Society, New Zealand) Explanation: As the Moon passed almost directly through the center of Earth's shadow on July 16th, sky gazers in the Pacific hemisphere were graced by a lingering lunar eclipse . ... A longer total lunar eclipse won't occur until the year 3000. ... July . ... July 2000 . ... Publications with keywords: eclipse - lunar eclipse . Publications with words: eclipse - lunar eclipse . ...

Educator's Guide to Eclipses . ... In a solar eclipse you observe the Sun (using only safe methods, of course). ... In a lunar eclipse you observe the Moon. ... Because of the geometry described below, you can only view a solar eclipse when the Sun is up, and the Moon is nowhere to be seen. ... Eclipses occur when the Sun, Earth and Moon line up. ... In a solar eclipse the Moon passes directly in front of the Sun. ... In a lunar eclipse the Moon moves into Earth's shadow. ...

... Transits do not happen every time Mercury passes between the Earth and Sun because their orbits are not in exactly the same plane, as we will see in this activity. ... Transits of Mercury occur at only two times during the year (but not every year). ... Can you tell which two months the orbits of Earth and Mercury are in line with the Sun? _____________________ and ________________________ [pic] ----------------------- ( Transits of Mercury occur at only two times during the year (but not every year...

... July 22, 2009 - The X-ray Solar Eclipse . The Russian TESIS (FIAN) Solar Observatory has transmitted observations back to Earth of the solar eclipse made on July 22nd, 2009. ... And 4 hours later, when almost all the inhabitants of the Earth had already said goodbye to the eclipse, TESIS telescopes captured images of the second deepest transit of the Moon across the Sun ( film 1.2 MB, wmv format ). ... July 20, 2009 - The TESIS Observatory will observe two solar eclipses from space . ...

... The Round Earth . ... Aristarchus around 270 BC derived the Moon's distance from the duration of a lunar eclipse (Hipparchus later found an independent method). ... Let R be the radius of that circle and T the time it takes the Moon to go around once, about one month. ... Viewed from Earth, a "new Moon" (occuring between the time a thin crescent is last seen before sunrise and the time one is seen shortly after sunset) happens when the Moon in its apparent motion around the sky overtakes the Sun. ...

Different types of satellite orbits have different uses: while the synchronous orbit is best for communication satellites, Lagrangian point orbits help monitor the solar wind before it reaches Earth. A low altitude polar orbit is widely used for monitoring the Earth because each day, as the Earth rotates below it, the entire surface is covered. ... A different choice was made for MAGSAT, orbited 1979-80 to survey the Earth's own magnetic field near its surface. ...

... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2003 February 24 . Comet Neat Passes an Erupting Sun . Credit: SOHO Consortium , LASCO , ESA , NASA . Explanation: As Comet NEAT flared last week, the Sun roared . ... The above image was taken on February 18 when the comet was so bright it created an artificial horizontal streak on the camera image. ... About APOD | ... NASA SEU Edu. ...

Next: NUMBER of PASSES Up: Tape Management Previous: TAPE HANDLING at SCAN Contents . Tapes for the Mark III and VLBA systems come in two nominal lengths, 9600 ft and 18000 ft. ... The following table gives the recording times per pass to expect with these tape speeds and recording rates: . RECORDING TIMES for 1 pass on VLBA and Mark III tapes. ... For Mark III, the longer tapes will hold 3.37 times as much data per pass as the shorter tapes. ...

There will be a total lunar eclipse during the morning of Thursday 28th October. The Moon will enter the faint penumbral shadow cast by the Earth at 1.06 am, and the partial eclipse phase will begin at 2.14 am. ... However, during such an eclipse, the Moon usually remains visible because some sunlight passing through the Earth's atmosphere is refracted in the direction of the Moon. ... FOR FURTHER INFORMATION CONTACT: John McFarland at the Armagh Observatory, College Hill, Armagh, BT61 9DG. ...

... SAT0INTRO - INTRO TO USING THE AO SATELLITE PREDICTION ROUTINES. ... SATDOCNAMES - LIST OF ROUTINE NAMES . ... Previous Routine ] [Next Routine ] [ List of Routines ] NAME : satdoc - routine list (single line) sat0intro - Intro to using the ao satellite prediction routines . satcmpangle - compute angle between ra,dec,jd and satellites satdoc - routine list (single line) satdocnames - list of routine names satfindtle - find tle file for satellite name satinfo - return ...