The morning of Friday, November 6, the moon will shrink to a crescent, snuggling up to the right of Jupiter, the king of the planets.
The pair will be very eye-catching at only two degrees apart, equal to the width of four lunar disks. Adding to the beauty will be the Venus-Mars pair, hanging just ten degrees below.
For more celestial events, consult my Starstruck column at National Geographic.
Tags: conjunction, Jupiter, Mars, The Moon, Venus
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On this very special week we celebrate Valentine’s Day the sky is full of romance too with the moon pointing to a giant lion’s heart and the mythical goddess of love shining at its most brilliant.
Over the course of the next few days there is a whole line-up of stargazing targets for both the unaided eyes to backyard telescopes.
The brightest planets in the sky remain both Jupiter and Venus. Meanwhile you can still catch Mercury as it is fading fast low in the evening twilight in the southwest horizon. Your best chance to see the innermost planet now is with binoculars.
Mars aficionados will have to wait until near midnight for it to rise in the east and will be at its highest in the south in the pre-dawn hours. If you have good atmospheric conditions a telescope will show off some of its largest surface features. Best views of the Red Planet though will be in April when its apparent diameter will be 50% wider.
Finally Saturn rises around local 1 am and climbs to its highest point in the southern sky by dawn. You can get a two-for-one deal since Mars will be its far right.
Get all your observing details for these and other sky events this week at my weekly skywatching column at National Geographic News.
Tags: astronomy, Constellations, Jupiter, Mars, Planets, skywatching, space, Stargazing, stars, Valentine, Venus
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As we head towards the final days of January, the night sky is filled with cosmic wonders, from a supernova explosion, Mercury at its best, and Martian close encounters.
For the naked-eye observers nothing beat the moon gliding past bright planets – and this week Luna’s close encounter with Venus will be a beauty. For binocular observers – the forth brightest asteroid is fairly easy to hunt down in Pisces constellation in the evenings, while a stunning open star cluster hits prime-time in backyard telescope with scores of diamond-like stars huddling together.
Get all your observing details for these and other sky events this week at my weekly skywatching column at National Geographic News.
Tags: Constellations, Mars, Mercury, Pisces, Planets, skywatching, space, Spica, Stargazing, stars, The Moon
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Another amazing example of the power of the internet and citizen science came to light this week when NASA announced that an online community of space geeks from Russia may have found the Soviet Mars 3 probe – which has been sitting silent on the surface of the Red Planet since 1971. Thanks to the super high resolution imagery from NASA’s Mars Reconnaissance Orbiter, tantalizing new evidence of the old spacecraft’s hardware is clearly visible.
Read the rest of my story on this amazing discovery at National Geographic News
Tags: Mars, Mars 3 lander, NASA
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Mars may have a really bad day next year on October 19th. That’s when there is a very slight chance a newly discovered comet may impact our neighboring planet, says NASA.
Comet C/2013 A1 (Siding Spring) was discovered by Australian Robert H. McNaught, a prolific comet and asteroid hunter just two months ago and NASA’s Near-Earth Object Program Office at the Jet Propulsion Laboratory , in Pasadena, Calif., has been constantly refining the comet’s exact trajectory ever since.
Read the rest of my Mars comet story at National Geographic News
Tags: comet, impact, Mars
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After nearly two weeks of the blogosphere and media in general wildly speculating as to what the NASA Mars rover announcement will be, the day finally arrived. This morning the lead NASA researchers involved in analyzing the soil samples scooped up by the rover’s robotic arm held a press conference revealing their findings. Scientists explained that they had the rover’s suite of scientific instruments run through its first soil samples of the mission by heating the soil in a tiny on-board oven, and sniffing out the various trace gases released.
Most of the rumors surrounded the idea that complex organic compounds had been detected, but that is not the case. What they did tentatively find are traces of perchlorate – an oxygen and chlorine based molecules that has also been found in the soil by the late Pheonix lander in the high north arctic region of the Red Planet a few years back. Further heating, NASA says, formed reactions with carbon, produced methane -based compounds. This has left scientists stumped. NASA is not sure where the carbon comes from – Earth contamination maybe? Further analysis will tell the story.
While many are disappointment that no proof of Martian life materialized, the mission team members are stoked because now they know their science instruments are working like a charm. Only four months into a 2 year mission, the best is yet to come and I think lots of exciting results are in store in the coming months. But as one of the Mars scientists pointed out – patience is part of the process.
“We’re doing science at the speed of science in a world that goes at the speed of Instagrams.” said Curiosity chief scientist John Grotzinger of Caltech in Pasadena.
Read all the details and check out more photos released to today at the press conference on NASA website.
Tags: Cur, Curiosity, Mars
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This photo is simply awesome and I think gets all Mars buffs really excited. That’s because we not only see the rover’s own shadow on the pebbly ground, but can also spy in the distance the main science target of the 1 – ton curiosity rover a day after it touched down inside the 150 km wide Gale crater. Even though this is only the first b/w, low-res image of Mount Sharp – a central peak in the crater rising more than 6.5 km in height – we can tell that its going to be an exciting and challenging destination.
NASA hopes to drive the rover to the mountain – which sits about 10 km away from the landing site – eventually up its slopes, to study its lower layers. To astro-geologists they look like sedimentary rocks, which they are betting may shed some light on past environmental change – ie. water drenched the area. This image was captured by the rover’s front left Hazard-Avoidance camera at full resolution shortly after it landed. Can’t wait to see full resolution colour panoramic shots in the next week….
Tags: Gale Crater, Mars, Mars Curiosity, Mount Sharp
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For skywatchers August will be a busy month with a meteor shower and multiple planetary close encounters!
For early bird skywatchers the goddess of love, Venus dominates the dawn skies in the east perched firmly in the constellation of Gemini, the twins. The great white beacon rises nearly 3 and half hours before the sun every morning and through a small telescope appears like a miniature version of a quarter moon.
Look below Venus for its fainter companion Jupiter – the largest planet in the solar system – sits below nestled between the horns of Taurus the bull constellation. On August 11th the moon will form a celestial triangle with the jovian giant and the eye of the bull – the star Aldebaran. Two mdays later a razor thin crescent moon will park itself to the upper right of Venus.
Watch these two worlds closely and you will notice that while they have been hanging around each other for the past couple of months, the much speedier Venus will quickly increase the gap with Jupiter so that by the end of the month there will be 40 degrees apart.
On August 13 for those with telescopes, Venus will do a disappearing act as it slips behind the very upper portion of the crescent Moon during the daytime. Known as an occultation, this dramatic event however will be a real challenge to catch because it will be occurring in the late afternoon while luna sinks quickly in the low western horizon sky. The first hint of Venus creeping behind the moon will begin at 4:36pm and will take about 25 seconds to completely disappear. Since the moon will be only a few degrees in altitude (eastern N. America) your best bet to catch this event is to find a location that has a clear line of sight right down to the western horizon – like highway overpasses, hilltops and lakesides. Check out a listing of occulation times here.
But there is even more cosmic action in the evening skies. Look towards the west at nightfall for an impressive stellar grouping of the planets Mars, Saturn and the star Spica, in the constellation Virgo. Take note of the diverse colours of these three objects, with orange-hued Mars, yellowish Saturn and brilliant blue-white Spica. The most eye-catching aspect of this stellar trio will be watching them play musical chairs in the sky as they shift positions over the course of the month as they move along in their respective orbits around the Sun.
Then at dusk on August 21th the three objects form an equatorial triangle with the waxing crescent Moon just below.
Shooting Stars Galore
The big astronomical crowd pleaser this month however has to be the famous Perseid meteor shower. Peaking on the night of August 11th and into the early morning hours of August 12th, conditions promise to be good this year because there will only be a crescent moon rising after 1 am so minimal interference from its light is expected. You can expect up to 20 to 30 meteors per hour visible from suburbs and up to 60 from a dark sky.
You can expect about half that many the night before (Aug.10) and after (Aug.13). Best way to see the shower is to lie back on the ground or on reclining lawn chair facing the northeast sky with your naked-eyes. Most of these meteors are the size of a grain of sand and are travelling at about 150,000 km per hour, burning up at about 100 km above your head.
The Perseids get their name from the constellation Perseus – where the shooting stars seem to radiate from in the sky. The meteor shower originates from a cloud of particles in space that was shed by a comet that orbits the Sun. Every year at the same time of year, Earth slams into this cloud of debris, creating a cosmic shower in the heavens above.
BTW if the skies are clear and you are in Montreal area on August 11th, join me and the Royal Astronomical Society of Canada for a free Perseids star party at the Morgan Arboretum in Ste. Anne De Bellevue starting at 8pm with a lecture- rain/cloudy date is August 12th.
Tags: Mars, Saturn, Venus
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Space buffs and skywatchers are gearing up for ‘Mars Day’ on Sunday, August 5th as a striking sky show coincides with the daring landing of NASA Mars rover!
Only a hours before Curiosity touches down, Mars, along with ringed Saturn and one of the brightest stars in the heavens, Spica, will form an eye catching grouping as they huddle together in the southwest evening sky. To the naked eye they will appear to be in a equilateral triangle, separated by only 5 degrees on each side – equal to the width of a fist at an outstretched arms length.
Tags: Mars, Saturn, Spica
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The NASA team behind the Mars rover scheduled to touchdown this weekend held a news conference today, August 2nd, offering some of the latest details about their hopes and fears surrounding the mission and current status of the rover. Everything is a go for a landing in the early morning hours this Monday. The spacecraft is healthy as is the metric ton sized rover tucked inside. But the entire team is on pins and needles about the landing, and crossing fingers that all goes as planned. Out of the entire Sunday evening’s hair-raising events leading up to a touchdown, the parachute and sky crane maneuvers are what “what keeps the team up at night”‘, says lead mission engineer Adam Steltzner.
Another worry has nothing to do with man-made technology working properly – it’s what the weather will be like on Mars when we get there. There is currently a large dust storm kicking up about 1000 km from the landing site according to the latest imagery from the Mars Reconnaissance Orbiter and the worry is that it could either “drift over the landing site or stir up dust that moves as haze over the site,”.
While they are waiting with nervous anticipation, the big take home message the engineers and scientists made sure to get across to reporters was that Mars Science Laboratory mission is a bridge between past and future missions that not only builds on lessons learned from Mars probes gone by but also leverages the current assets that are still functioning at Mars. They also outlined how some of the data that will be returned from the entry, decent and landing will be critical in designing future human missions to the Red Planet.
Here is the official word from NASA today…
“NASA’s newest Mars mission, landing in three days, will draw on support from missions sent to Mars years ago and will contribute to missions envisioned for future decades.
“Curiosity is a bold step forward in learning about our neighboring planet, but this mission does not stand alone. It is part of a sustained, coordinated program of Mars exploration,” said Doug McCuistion, director of the Mars Exploration Program at NASA Headquarters in Washington. “This mission transitions the program’s science emphasis from the planet’s water history to its potential for past or present life.”
As the Mars Science Laboratory spacecraft places the Curiosity rover on the surface of Mars next week, NASA will be using the Mars Odyssey orbiter, in service since 2001, as a relay for rapidly confirming the landing to Curiosity’s flight team and the rest of the world. Earth will be below the Mars horizon from Curiosity’s perspective, so the new rover will not be in direct radio contact with Earth. Two newer orbiters also will be recording Curiosity’s transmissions, but that data will not be available on Earth until hours later.
When Curiosity lands beside a mountain inside a crater at about 1:31 a.m. EDT, Aug. 6 (10:31 p.m. PDT Aug. 5), the 1-ton rover’s two-year prime mission on the surface of Mars will begin. However, one of the rover’s 10 science instruments, the Radiation Assessment Detector (RAD), already has logged 221 days collecting data since the spacecraft was launched on its trip to Mars on Nov. 26, 2011.
“Our observations already are being used in planning for human missions,” said Don Hassler of Southwest Research Institute in Boulder, Colo., principal investigator for Curiosity’s RAD.
The instrument recorded radiation spikes from five solar flare events spewing energetic particles from the Sun into interplanetary space. Radiation from galactic cosmic rays, originating from supernova explosions and other extremely distant events, accounted for more of the total radiation experienced on the trip than the amount from solar particle events. Inside the spacecraft, despite shielding roughly equivalent to what surrounds astronauts on the International Space Station, RAD recorded radiation amounting to a significant contribution to a NASA astronaut’s career-limit radiation dose.
Curiosity’s main assignment is to investigate whether its study area ever has offered environmental conditions favorable for microbial life. To do that, it packs a science payload weighing 15 times as much as the science instruments on previous Mars rovers. The landing target, an area about 12 miles by 4 miles (20 kilometers by 7 kilometers), sits in a safely flat area between less-safe slopes of the rim of Gale Crater and the crater’s central peak, informally called Mount Sharp. The target was plotted to be within driving distance of layers on Mount Sharp, where minerals that formed in water have been seen from orbit.
“Some deposits right inside the landing area look as though they were deposited by water, too,” said John Grotzinger of the California Institute of Technology (Caltech) in Pasadena, project scientist for Curiosity. “We have a great landing site that was a strong science contender for earlier missions, but was not permitted for engineering constraints because no earlier landing could be targeted precisely enough to hit a safe area inside Gale Crater. The science team feels very optimistic about exploration of Mount Sharp and the surrounding region that includes the landing ellipse.”
Mission engineers designed a sky crane maneuver, lowering Curiosity on nylon cords from a rocket backpack because the rover is too heavy to use the airbag system developed for earlier rovers. “We know it looks crazy,” said Adam Steltzner of NASA’s Jet Propulsion Laboratory (JPL) in Pasadena, leader of the team that developed the system. “It really is the result of careful choices.” By designing the aeroshell enclosing Curiosity to create lift and be steerable, engineers were able to build a system that lands much more precisely instead of dropping like a rock.”
Tags: Mars, Mars Science Laboratory
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