Category Archives: News

We Still Don’t Know What Exploded Over Tunguska in 1908

This is an article, now updated, that I originally posted in 2009 during my first year of blogging. Since then more research has been done on the famous 1908 Tunguska Event and we even had a remarkably similar type of thing occur in February 2013 over the Chelyabinsk area, not too far from Tunguska, but even today, the 108th anniversary of the event, scientists aren’t in agreement over what it was that violently exploded over the boggy forests of Siberia—asteroid or comet.

tunguska_event

Flattened trees in Siberia from a 1908 atmospheric explosion

Long the subject of debate, with various theories ranging from meteorite impact to a comet to a flying saucer’s sudden engine meltdown, there’s actually strong evidence that the 1908 “Tunguska Event” was likely caused by the explosion of a comet in the upper atmosphere.

This idea has been suggested before, and is supported by Cornell University engineering professor Michael Kelly’s study of – strangely enough – the space shuttle’s exhaust plumes and their effect on high-atmosphere cloud formation.

To those not familiar with the Tunguska Event, something exploded or impacted in the remote area of Russia on June 30, 1908, flattening the forest in an 830-square-mile area, but leaving no visible crater or other obvious sign of what caused the event. Nearby residents reported the sound of a massive explosion, but that’s about it. Whatever it was, the devastation it caused was extensive and undeniable.

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Planetkiller Presents New Evidence for “Planet X”

Is there a "dark Neptune" lurking at the extreme edge of the Solar System?

Is there a dark, massive “Planet Nine” lurking at the extreme edge of the Solar System?

A planet-killing astronomer is now attempting to introduce a new world into the Solar System.

Self-professed “Pluto killer” Mike Brown — the Caltech professor and astronomer whose discovery of Eris in 2005 prompted the reclassification of what constitutes a full-fledged planet, thus knocking Pluto from the list a year later — is now offering up evidence for the existence of a “real” ninth planet, far beyond the orbit of Pluto and possibly even traveling farther than the Kuiper Belt extends. This “Planet Nine,” say Brown and co-researcher Konstantin Batygin — also of Caltech — could be nearly the mass of Neptune, although it has not been directly observed by any Solar System surveys performed to date.

(And for those long-time Planet X fans who will assuredly cry “told you so,” this hypothesis is based on actual observations and not just wishful thinking or sci-fi dreams. There’s a difference.)

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Fireball Explodes Over Russia… Again

Why does Russia seem to get so many bright meteors? Well, at 6.6 million square miles it’s by far the largest country in the world plus, with dashboard-mounted cameras being so commonplace (partly to help combat insurance fraud) mathematically it just makes sense that Russians would end up seeing more meteors, and then be able to share the experience!

A bolide detonated over Murmansk, Russia on April 19, 2014

A bolide explodes over Murmansk, Russia on April 19, 2014 (Credit: Alexandr Nesterov)

This is exactly what happened early this morning, April 19 (local time), when a bright fireball flashed in the skies over Murmansk in the Kola Peninsula, located in northwest Russia near the border of Finland. Luckily not nearly as large or powerful as the Chelyabinsk meteor event from February 2013, no sound or air blast from this fireball has been reported, and details on the object aren’t yet known (could be a meteor, could be space debris). The video above, captured in part by Alexandr Nesterov from a dashcam, shows the object lighting up the early morning sky. Check it out, and follow me on Twitter for more details as they are released. Heads up!

Source: RT.com

Visiting the Place Where We Talk to Space

On April 2 I had the chance to visit NASA's Deep Space Network as part of a NASA Social (© J. Major)

On April 2 I had the chance to visit NASA’s Deep Space Network as part of a NASA Social (© J. Major)

When you’re talking to spacecraft billions of miles away, you need a powerful voice. And when you’re listening for their faint replies from those same staggering distances, you need an even bigger set of ears. Fortunately, NASA’s Deep Space Network has both — and last week I had the chance to see some of them up close and in person as one of the lucky participants in a NASA Social at JPL and the Deep Space Network! (If you follow me on Twitter you may have seen the live photos I had been sending from the event.) Want to know what happened during those two amazing days? Read the rest of this article here.

Rings Discovered Around an Asteroid

Artist's impression of the view from the asteroid Chariklo. Credit: ESO/L. Calçada/Nick Risinger (skysurvey.org)

Artist’s impression of the view from the asteroid Chariklo. Credit: ESO/L. Calçada/Nick Risinger (skysurvey.org)

We all know that Saturn is encircled by a system of rings, and perhaps you also know about the fainter rings around Uranus, Jupiter, and Neptune. But today, ESO astronomers have revealed a surprising discovery: there are also rings surrounding the asteroid 10199 Chariklo, a small, distant world orbiting the Sun far beyond Saturn.

This makes 250-km-wide Chariklo the fifth world ever found to have rings, after the four planets mentioned previously, and, based on the observations, it could also even have its own moon.

“As well as the rings, it’s likely that Chariklo has at least one small moon still waiting to be discovered,” said Felipe Braga-Ribas of the Observatório Nacional/MCTI in Rio de Janeiro who planned the observation campaign and is lead author on the new paper.

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The Brightest Lights: 12 Awesome Space Stories of 2013

1400-image mosaic of Earthlings waving at Saturn on July 19, 2013 (NASA/JPL)

1400-image mosaic of Earthlings waving at Saturn on July 19, 2013 (NASA/JPL)

What a year for space exploration! With 2013 coming to a close I thought I would look back on some of the biggest news in space that I’ve featured here on Lights in the Dark. Rather than a “top ten” list, as is common with these year-end reviews, I’m going to do more of a month-by-month (hence the 12) to help recollect some of the amazing stories and sights that 2013 has brought us. And with some of the big headliners we’ve seen this year it’s easy to lose sight of the smaller (but no less fascinating) discoveries — so I’ll be sure to include some of those too. After all, when it comes to learning about the Universe there’s no “little” news!

Ready? Let’s go!

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