Saturn has been getting a lot of attention
in recent times, what with Cassini diving inside its rings and returning some magnificent
pictures. However, spare a thought for Jupiter, which is similarly captivating.
NASA has currently got the Juno spacecraft in orbit around it, and it too has
been sending back some spectacular snaps. NASA actually inspires members of the
public to take the pictures and spruce them up a bit, with featured pictures
then posted on the JunoCam website. Therefore, you can also vote on what
features the spacecraft looks at next, such as the Great Red Spot. So, without
further ado, let's look at some of the best recent images from Juno. Take it
away, Jupiter. You’ve earned it. Source: CP
Tuesday, 16 May 2017
Tuesday, 9 May 2017
The Exclusive Green Moss Balls of Lake Myvatn and Lake Akan
You might be wondering what on
earth a lake ball is? The species itself is called Moss Balls of Lake Myvatn
and Lake Akan is a species of filamentous green algae named Aegagropila linnaei
that grow into large green balls with a velvety appearance. Moss Balls is also
called marimo (In Japanese for "ball seaweed"), also known by several
names such as Cladophora ball and Lake ball. These beautiful Moss balls grow in
sizes of 12 to 30 cm across, subject on where you find them. However, “Marimos”
are rare and is known to occur only in Iceland, Scotland and Japan, primarily
Lake Akan in Japan and Lake Mývatn in Iceland. Recently, moss balls appeared in
a large numbers on Dee Why Beach, in Sydney, the first such spotting of this
alga in the southern hemisphere. It is currently believed to be one of only two
locations where it exists in the world. Around two years ago that the marimo
had decreased to such an extent that there are hardly any left, the remaining
balls are scattered over a rather small area and their condition is not good.
“They look rather limp, not firm and beautiful as they should be and hollow
inside.
Marimo doesn’t grow around a
core, such as a pebble. In its place, the algal filaments grow in all
directions from the centre of the ball, continuously branching and thereby
laying the foundation for the spherical form. Surprisingly, the ball is green
all through, although light only reaches very short distance into the ball. The
chlorophyll inside the ball remains dormant in the dark, but becomes active
when uncovered to light if the ball breaks apart. Moreover, moss balls are
found submerged in the lake’s bed where the mild wave action often turns them over
maintaining its spherical shape, at the same time ensuring that they can
photosynthesize no matter which side is turned upwards. In Japan the Marimo is
well protected and revered, and officially a natural treasure since 1920.
Hence, at Lake Akan a boundless effort is spent on the conservation of the lake
balls that includes an annual 3 day Marimo festival. Where small hand rolled
balls of free-floating filaments is sold in shops as souvenirs. Moreover,
Marimo is also a staple in many Japanese aquariums.
Meanwhile in Lake Myvatn, lake
balls are gradually vanishing. Around ten years ago, the lake balls in Lake
Mývatn were two to three layers thick on the lake bottom. Nowadays, they’re
mostly gone, and their disappearance is attributed to pollution caused by
mining operation in the area that commenced in the 1960s. Therefore, the big
amount of phosphorous and nitrogen dumped into the lake has radically increased
the lake’s bacteria that feed on those nutrients, swarming so compactly that
they blocked the sunlight that reached down to the lake’s bottom. Thus, in the
less sunlight, the algae start to die off, revealing more of the lake bottom’s
loose sediment. Furthermore, the wind and the waves that once rolled the balls
into their shape stirred the loose sediment covering the left behind algae,
further depriving them of sunlight. The Marimo was given a status of protected
species in Iceland in 2006, but it was already too late. In Japan the marimo is
a natural treasure while in Iceland they are a protected species.
Source: Charismatic Planet
Source: Charismatic Planet
Friday, 5 May 2017
Soviet-era Shuttles Left to Rust in an Abandoned Deseret of Kazakhstan
This must be called as “Ghosts of the USSR” as eerie
photographs show Soviet-era space shuttles left to rust in an abandoned desert
hangar in Kazakhstan. Two test shuttles were found inside a derelict Soviet
warehouse near the Cosmodrome Baikonur, 125 miles east of the Aral Sea. The
both were developed as part of Moscow's Buran programme which was shut down in
1993 - but neither of the craft was sent to space. Another vast Energia rocket
was designed to propel the Buran, an unmanned space plane, into orbit. The main
purpose of rocket to compete with Nasa's Saturn V, the super-lift launch
vehicle that supported the Apollo mission to the moon. The Energia weighs in at
a huge 2,400,000kg in spite of being made of super-light metals. The massive
hangar that houses the rocket was actually an assembly complex and, measuring
433ft long by 203ft in height, it is the largest building at the Baikonur
Cosmodrome.
The Russian Alexander Kaunas said, he walked almost 24 miles
through the desert to reach the hangar once a hub of activity but now left
derelict and picture the unused shuttles and rocket. Therefore, just like Nasa's
Space Shuttles, the Buran vehicles had engines located at the back, and two
wings for a controlled landing back on Earth. The Russian model had conspicuous
external similarities to the US Space Shuttle Columbia sparking suggestions
Cold War espionage may have played a part in its development. So, the both US
Space Shuttles and Buran had the same shape and size, the same vertical tail
structures and even alike colors in white with a black trim. A documents of
1990s revealed, the KGB stole the designs for the US shuttle in the 1970s and
1980s enabling the Kremlin to build a carbon copy of the American system.
Documents acquired dealt with airframe designs, materials, flight computer
systems, and propulsion systems. This information allowed Soviet military
industries to save years of scientific research and testing time as well as
millions of rubles as they developed their own very similar space shuttle
vehicle.'
Moreover, development of the Buran programme
started in 1976, with the recyclable spacecraft capable of performing
operations in orbit before returning to Earth. But after one unmanned
spaceflight of the Orbiter 1K1 in 1988, the scheme was scrapped following the
dissolution of the USSR in 1993. Orbiter 1K1 was crushed and destroyed in the
same complex - but in a different hangar - in 2002. The collapse killed eight
workers. The rocket Kaunas was to act as a heavy-lift launch system and booster
for the Buran spaceplane. Thus, it has
been left abandoned in the disused hanger since 1991.
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