The Watchers

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Night sky guide for January 2016

We start the year with our planet reaching perihelion - closest point to the Sun - which will happen at 22:49 UTC on January 2. At the time, Earth will be 146.6 million km (91 million miles) from the Sun. 

The first meteor shower of the year - Quadrantids - will reach the maximum rate of activity on the morning of January 4. However, some shooting stars will be visible each night from January 1 to 6. The Moon will be 24 days old at the time of peak activity, and so will present minimal interference.

The best time of the month to observe faint objects such as galaxies and star clusters because there is no moonlight to interfere - New Moon - is scheduled for the night of January 10.

Full Moon is scheduled for January 24. 

  • January 2 - Earth at perihelion - 22:49 UTC.  The Earth's annual orbit around the Solar System will carry us to our closest point to the Sun, at a distance of 0.98 AU (146.6 million km / 91 million miles)...

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Geminid meteor shower - king of meteor showers peaks this weekend

One of the most popular meteor showers in the night sky and the most impressive meteor shower of the year - Geminid meteor shower - is set to peak between the nighttime on December 13 and the early morning December 14, 2015, producing up to 120 meteors per hour in perfect conditions. The near new moon will not interfere with observing on either night.

The Geminids started appearing in the mid-1800s, however, with only 10 - 20 meteors seen per hour the first showers were not noteworthy. Since that time, the Geminids have grown to become one of the most major and most reliable meteor showers of the year. The Geminids are bright and fast meteors and tend to be yellow in color.

Geminids originate from an asteroid 3200 Phaethon which takes 1.4 years to orbit the Sun once. Astronomers speculate whether Phaethon is a "dead comet" or a new kind of object called a "rock comet". Its comet-like highly elliptical orbit around the Sun gives credence to this hypothesis. However, scientists are not certain how to define Phaethon. When Phaethon passes by the Sun it does not develop a cometary tail, and its spectra looks like a rocky asteroid. Also, the bits and pieces (2-3 gm/cc) that break off to form the Geminid meteoroids are also several times denser than cometary dust flakes (0.3 gm/cc).

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Night sky guide for December 2015

December 2015 will feature three meteor showers: the Geminids, the Puppid-Velids and the Ursids. The Geminid meteor shower is popularly known as the "king of meteor showers". This year, it is expected to produce up to 120 meteors per hour at its peak, which will occur on December 13/14. The crescent moon during this period will make for a fantastic show.

The Puppy-Velids shower will peak on December 9 and will produce a maximum of 15 meteors per hour at its peak. The 28 day old moon during this period will enable a good viewing experience. The Ursids, on the other hand,will peak on December 21/22 and are expected to produce only between 5-10 meteors per hours. The waxing gibbous moon will probably block out most of the fainter meteors further spoiling the show.

The new moon is always the best time to observe faint objects in the sky. This month it falls on December 11.

This month's full moon, known as  the Full Cold Moon or the Full Long Nights Moon falls on December 25. 

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Rapid plankton growth in North Atlantic suggests a swift environmental change

An unusual plankton growth has been discovered in the North Atlantic, in contrast to the scientific predictions for the area. The discovery suggests a swift environmental change as a result of increased amounts of carbon dioxide may be underway.

A team of researchers has conducted a study to investigate the microscopic algae growth in North Atlantic and the results have, to their surprise, showed a major increase of certain species. For example, in a period between 1965 and 2010, the abundance of single-cell organism coccolithophores showed a tenfold increase with sharp peaking during the late 1990s.

Coccolithophores are single-cell algae organisms that cloak themselves in a distinctive cluster of pale disks made of calcium carbonate, or chalk. They play a role in cycling calcium carbonate, a factor in atmospheric carbon dioxide levels. In the short term they make it more difficult to remove carbon dioxide from the atmosphere, but in the long term - tens and hundreds of thousands of years - they help remove carbon dioxide from the atmosphere and oceans and confine it in the deep ocean.

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Earth surrounded by dense, hairy filaments of dark matter

A new research, conducted by scientists of NASA's Jet Propulsion Laboratory in Pasadena, California, suggests that Earth is surrounded by long, 'hairy' filaments of dark matter. Theoretically, the hairy filaments, if detected could be used to map out the inner layers of any planet or space bodies, NASA announced on November 23, 2015.

Dark matter, is believed to be an invisible substance making up approximately 27% of all matter and energy of the universe. Regular matter, or 'visible' builds up only 5% of the universe. According to experts, the rest of the universe building blocks is made of dark energy which is associated with acceleration of our expanding universe.

So far, no experiments have been able to detect dark matter or dark energy, however scientist are confident in its existence, based on observations of its gravitational pull in action, and they have also been able to measure how much of it is our there to the accuracy of 1%.


Illustration showing Earth surrounded by...

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Annual Leonid meteor shower peaks this week

As we approach the end of the year, it is time to welcome the annual Leonid meteor shower. This shower is associated with the comet Tempel-Tuttle and is considered to be one of the most beautiful meteor showers in existence. 

This year, the Leonid meteor shower is expected to peak on the early mornings of November 17 and 18, 2015. Also, this year's avatar is expected to be a simple shower and not a meteor storm. 

Like most other meteor showers, the Leonid shower is named after its radiant point, the point from where the shower seems to originate in the night sky. In this case, the radiant point is the constellation Leo, hence the name. The Leonid shower occurs when Earth moves through the debris field of the comet Tempel-Tuttle and the small pieces of debris burn up in our atmosphere creating the meteor shower.

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Electric comets in action

The ThunderBolts started a series of reports on groundbreaking scientific data from the ESA Rosetta mission to Comet 67P.

In previous Space News', Dr. Franklin Anariba, a lecturer at Singapore University of Technology and Design, has presented a scientific argument for electrochemical processes on comets.

Dr. Anariba begins his analysis of recently published scientific papers, which provide perhaps the best direct evidence to date of the electrical nature of cometary activity.

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Mars' moon Phobos is slowly disintegrating

The long shallow grooves on Phobos are likely early signs of structural damage. Scientists now believe that Phobos is not solid but instead is a pile of rubble covered by a thick layer of dust which makes it look solid. Scientists expect the moon to be pulled apart in 30 to 50 million years thanks to Mars' gravity. 

Phobos is the larger of Mars' two moons. Due to their low orbits and diminutive size, scientists have long wondered whether Mars' two moons, Deimos and Phobos, are real moons or just asteroids captured by Mars' gravity. Even so, Phobos orbits Mars at a distance of 6 000 km (3 700 miles) from the surface of the Red Planet. This makes Phobos closer to its host planet as compared to any other moon in the entire Solar System.

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Astronomers discover the farthest planetoid in the Solar System

Astronomers have spotted a dwarf planet which is three times farther away than Pluto. This makes it the farthest object discovered in the Solar System. Once its orbit is ascertained, planetoid V774104 may teach researchers a lot about the early Solar System.

The researchers, led by Scott Sheppard, an astronomer at the Carnegie Institution for Science in Washington, D.C, used Japan’s 8-meter Subaru Telescope in Hawaii to detect the dwarf planet. This discovery was then announced at a meeting of the American Astronomical Society on November 10, 2015. Most searches involving distant objects tend to focus on the Solar System's plane. However, in this case, researchers focused on that region of the sky which was an average of 15° away from the ecliptic.

The discovered planetoid has been named V774104 and is between 500 and 1000 kilometers (310 to 621 miles) across. The dwarf planet lies 15.4 billion kilometers (9.56 billion miles) from the Sun, or 103 astronomical units (AU) away. One Astronomical Unit (AU) is the precise distance between the Earth and our sun.

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World’s largest floating wind farms to power UK homes in few years

The construction of the world's largest floating wind farm has been approved off the coast of Peterhead in Scotland, Scottish Government announced on November 2, 2015.

The UK's first floating wind development, Hywind, will be built about 25 km (15.5 miles) off the shores of Peterhead, near Buchan Deep, and attached to the local seabed by a three-point mooring spread and anchoring system. The five floating 6 MW Hywind turbines are expected to generate capacity of 135 GWh (gigawatt hours) of electricity annually, which is estimated enough to power up to 19 900 houses.

The turbines will be connected by an inter-array of cables and an export cable will transport electricity from the pilot park to shore at Peterhead. The project will be carried out by Statoil, the leading Norwegian energy company in oil and gas production.

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