What brings you an entire sidereal year of awesome space news and pictures, each and every day? (Besides me, of course?) That’s right: The Year in Space calendar!
Produced by Starry Messenger Press in conjunction with The Planetary Society, the 2015 Year in Space calendar is (like its predecessors) a gorgeous 16″ x 22″ (40.5 cm x 56 cm) work of art filled with over 120 images of space exploration and hundreds upon hundreds of facts and figures about space exploration. Sure it tells you the date like all calendars do, but no other calendar I know of gives you so much great information about astronomical objects, scientists and astronauts, the worlds of our solar system, and on-this-date space exploration history. If you love space – and if you’re reading my blog then I assume you do – then this is the perfect gift for yourself and any other space fans you may know. (Even if they don’t know they’re space fans yet!)
Because Lights in the Dark loves you (and its author is mentioned on the inside front cover) you can get a discount by mentioning that you saw it here. Find out how to get yours below:
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Here at Lights In The Dark I typically keep the articles and information to exploration occurring within our Solar System. But there have been amazing advances in the discovery of worlds far beyond our own family of planets and this recent news is quite fascinating: astronomers have spotted what appears to be a large gaseous exoplanet in the process of formation around a star only 335 light-years away — literally one of our own cosmic neighbors! Not only is this serendipitous, but also provides insight to how the planets and moons in our own Solar System may have formed, 4.6 billion years ago.
You don’t typically see Saturn’s rings looking like this, but then you can’t see in ultraviolet like Cassini (or many insects) can! The image above was acquired by the UVIS (UltraViolet Imaging Spectrograph) instrument aboard the Cassini-Huygens spacecraft on June 30, 2004, just as it was entering orbit around Saturn.
The area shown here is about 10,000 km (6,200 miles) across. It’s a small section of ring segments… just a portion of Saturn’s magnificent expanse of rings. Part of the C ring, toward Saturn, is along the left, and the inner edge of the B ring begins just right of the center. The colors are related to the composition of the ring particles; blue and green colors are from bright water ice, reds are rings with darker, “dirtier” particles.
While the colors aren’t “real” per se — our eyes simply can’t see UV light — the association of colors we can see to specific UV wavelengths allows scientists to accurately observe relative differences in the ring segments.
“It is cool that we can pick our own colors in the pictures we produce,” said Dr. Larry W. Esposito, a professor of Astrophysical and Planetary Sciences at the University of Colorado and UVIS Principal Investigator. “No person has ever seen ultraviolet light, although some butterflies can. Our pictures may thus represent a ‘butterfly’s-eye view’ of the Saturn system.”
Click the image to access a higher-resolution image on ESA’s Flickr page, and read more about the Cassini mission here.
Comet Siding Spring won’t hit Mars on October 19 but it will come really, really close: 86,000 miles, or just a bit over 1/3 the distance between the Moon and Earth. That’s like having a bullet from a sniper positioned a mile away knock your hat off! (Given that you were the target of a military-class sniper, not sure why you would be. Is there something I don’t know about you?) And while it won’t get bright enough or close enough to Earth to become a spectacle in our night sky, exploration robots on and around Mars should be in for quite a show.
Earlier this month, as Siding Spring (aka C/2013 A1) passed within the orbit of Jupiter, the Hubble Space Telescope turned its gaze onto it and captured the image above showing the comet’s icy 12,000-mile-wide coma and, after some processing, what appear to be two strong jets spraying out of its as-yet-unseen nucleus. These observations — and more like them in the months to come — will help scientists determine Siding Spring’s motion and rotation rate and what sort of interaction Mars (and its resident robots) can expect from its ejected material this fall.
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.
“It’s as though you were locked in a room your whole life and then somebody opens a window.”
– Neil deGrasse Tyson
Do you remember your first telescope? Your first trip to a planetarium or observatory? Astrophysicist and Cosmos: a Spacetime Odyssey host Neil deGrasse Tyson does, and in this installment of NOVA’s Secret Life of Scientists and Engineers he shares his memories of seeing the Universe on the Hayden Planetarium’s big screens for the first time, and then receiving his own first telescope a couple of years later.
Obviously, they made quite the impression on young Neil.
“Saturn has rings! Oh my gosh the Moon has craters! Things you’ve heard about and read about, but to experience them yourself becomes a singular moment in your life. You are there in the Universe.”
We’ve known for quite some time now that lakes of liquid methane and ethane exist on the frigid surface of Saturn’s overcast moon Titan. While the sheer presence of large amounts of liquid on another world is fascinating, one thing that’s particularly intrigued scientists about these hydrocarbon lakes is their uncanny stillness — in many radar images they appear to be literally as smooth as glass, with no indication of movement or wave action of any sort. And although liquid methane isn’t water and probably behaves differently, with Titan’s substantial atmosphere it only makes sense that some sort of waves would get kicked up across lakes so vast, even from the most moderate seasonal breezes.
Now, a research team led by Jason Barnes of the University of Idaho has released findings showing what might be wave action — however small — captured by instruments aboard NASA’s Cassini spacecraft during several Titan flybys. And with the summer season approaching, this just might mean it’s “surf’s up” on Titan!