Indian Express News Service
Tue, 24 Jan 2017 17:47 UTC
"This is probably the only composed photo of a green meteor. No photographer can plan this shot. This can happen for a fraction of second anywhere in the universe, and the fun part is, I was sleeping when my camera captured it. Everything else was hard work but for those 15 seconds, I was the luckiest photographer on the planet," says Yadav, who was working on a story on sky islands of Western Ghats when he shot this. Along with bird ecologist Dr Robin Vijayan, Yadav was working on a project to understand the role these mountains play in the formation of new species.
Born in Nagpur, Yadav went to Bangalore to pursue research at the National Center for Biological Science. In 2013, he moved to photography and began concentrating on environment and conservation stories. He is reportedly the only Indian to be represented by the National Geographic Creative. Although he has stepped away from the academic realm, Yadav considers himself a non-traditional scientist and often collaborates with researchers, policy makers and conservationists for his projects in the world of nature photography. Currently, he is working on a story on the sky islands of southern India for National Geographic and is documenting the unseen species of amphibians, reptiles, birds and mammals found only in the south Western Ghats.
Mon, 23 Jan 2017 14:06 UTC
Vladimir Krupko, head of the local planetarium, said: "Most likely it was a small meteorite, the size of a walnut.
"Since it was flying up high in the air, it was visible from other cities as well.
"When it entered the atmosphere it caught fire at about 120 kilometres (74.5 miles) above the ground, and by the time it was 40-60 kilometres (25-37 miles) above the ground the fire had gone out."
Despite there being plenty of larger objects whizzing around our solar system, no large meteorites, which are debris from a comet, asteroid, or meteoroid, are expected for at least 100 years, Mr Krupko said.
Comment: A few weeks ago two large meteor fireballs were caught on camera in northwestern Russia.
Fri, 20 Jan 2017 14:48 UTC
Ronan Toolis, who led the excavation, said: "The new archaeological evidence suggests that Galloway may have been the heart of the lost Dark Age kingdom of Rheged, a kingdom that was in the late sixth century pre-eminent amongst the kingdoms of the north." Excavations have revealed the summit of the hill was fortified with a timber-laced stone rampart.
Are we next? Researchers reconstruct the dark and frozen conditions on Earth after asteroid megastrike
Daily Mail UK
Fri, 13 Jan 2017 21:05 UTC
They say this 'big chill' had far more catastrophic effects that first thought, causing global temperatures to plummet for three years, even mixing oceans and killing off sea life.
'We can now contribute new insights for understanding the much debated ultimate cause for the demise of the dinosaurs at the end of the Cretaceous era.'
I performed follow-up measurements of this object, while it was still on the neocp. Stacking of 20 unfiltered exposures, 120 seconds each, obtained remotely on 2017, Jan 06.5 from Q62 (iTelescope network) through a 0.50-m f/6.8 astrograph + CCD + f/4.5 focal reducer, shows that this object is a comet with a compact coma nearly 10 arcsec in diameter elongated toward PA 40.
My confirmation image (click on it for a bigger version)
2017-A75 assigns the following preliminary parabolic orbital elements to comet C/2017 A3: T 2017 Jan. 20.6; e= 1.0; Peri. = 301.87; q = 3.91; Incl.= 99.12
Tue, 10 Jan 2017 14:03 UTC
According to the Slooh Observatory, the space rock, dubbed 2017 AG13, was moving at about 10 miles per second, making it hard to spot with a telescope.
"This is moving very quickly, very nearby to us," Eric Edelman, an astronomer with Slooh, said during a live broadcast of the surprise flyby at 7:47am ET on January 9.
NASA's Near-Earth Object hunting mission spots a Comet and a body that's 'either a Comet or an asteroid'
International Business Times
Fri, 30 Dec 2016 18:21 UTC
The comet, C/2016 U1 NEOWISE, made its closest approach to Earth on Dec. 12, when it flew by at a distance of 0.71 AUs (1 AU, or the mean distance between Earth and the Sun, is roughly 93 million miles). As it nears the sun, there is "a good chance" that it might be seen with a pair of binoculars next week, although it's hard to be certain, given the unpredictable nature of a comet's brightness.
"As seen from the northern hemisphere during the first week of 2017, comet C/2016 U1 NEOWISE will be in the southeastern sky shortly before dawn," NASA said in a statement. "It is moving farther south each day and it will reach its closest point to the sun, inside the orbit of Mercury, on Jan. 14, before heading back out to the outer reaches of the solar system for an orbit lasting thousands of years. While it will be visible to skywatchers at Earth, it is not considered a threat to our planet."
The nature of the other object, named 2016 WF9, is less clear. Scientists at NASA believe that given its 4.9-year-orbit — which, at its closest approach on Feb. 25, will bring it to a distance of roughly 32 million miles from Earth — it can have multiple possible origins. It may once have been a comet, or it may be a dark asteroid that has strayed from the asteroid belt.
Fri, 30 Dec 2016 17:02 UTC
But here's the catch — you'll need a pair of binoculars to see it. NASA says comet 45P/Honda-Mrkos-Pajdušáková, named for the astronomers who discovered it in 1948, takes 5.25 years to complete its orbit.This year, it was first visible on the low western horizon on Dec. 15. On New Year's Eve, it will appear in the sky right near the moon.
TheSkyLive.com. It will reach its perihelion — the point of orbit when an object is closest to the sun — on New Year's Day, making its orbit around the sun and disappearing from visibility from Earth. It will be viewable, and reach its maximum brightness, once it swings back around the sun in 2017.
Wed, 28 Dec 2016 18:30 UTC
The dates below refer to the date of issuance of CBET (Central Bureau Electronic Telegram) which reported the official news & designations.
Nov 03 Discovery of C/2016 U1 (NEOWISE)
Nov 02 Newly discovered asteroid 2016 VA came to about 90.000 km from the Earth's surface on the second day of November, reaching magnitude 12. It crossed the Earth shadow for a few minutes (between 23:24-23:35 UT on Nov 01, just 0.3 LD from Earth), challenging astronomers to observe a peculiar "asteroidal eclipse".
Below you can see an animation showing this spectacular event as observed by G. Masi (Virtual Telescope Project). According to Masi: "Each frame comes from a 5-seconds integration. At the eclipse time, the asteroid was moving with an apparent motion of 1500"/minutes".
Thu, 22 Dec 2016 13:32 UTC
Gliese 710 is currently 64 light-years from Earth, but for all intents and purposes, it's heading straight for us. A new study published in the journal Astronomy and Physics projects the close encounter will happen about 1.35 million years from now, and that the star will come within 13,365 AU of our sun (where 1 AU is equal to the average distance of the Earth to the sun), or 1.2 trillion miles. At that distance, it would take light 77 days to reach the Earth.
That's obviously far, but not in cosmological terms. That distance is well within the Solar System's Oort Cloud—a large bubble of ice and rock that surrounds the sun to a distance as far as 50,000 to 200,000 AU. So while Gliese 710 is sure to avoid a direct hit with any object in the inner Solar System, it'll likely travel through the Oort Cloud. And with its tremendous gravitational influence (it's about 60 percent the size of our sun), it'll perturb the many large rocks currently sitting idle way out there in the outer reaches. This star is poised to send a shower of comets into the inner Solar System, possibly causing a serious impact event with Earth.