Telescope twin powers: ACTIVATE! Form of… an asteroid?
Okay, so the telescopes involved aren’t twins — one is a giant 70-meter dish in California’s Mojave Desert and the other is a 305-meter behemoth high in the Puerto Rican rain forest — they did combine their powers to image the passing asteroid 2014 HQ124 on June 8 as it came to within about 3 lunar distances, obtaining some of the highest-resolution data of a near-Earth asteroid ever.
Before the pass this object was being called “the beast,” but once astronomers bounced some radar off it its true beauty shined through. Read more in my Discovery News article here.
Image credit: NASA/JPL-Caltech/Arecibo Observatory/USRA/NSF
It’s not a trick of the light or camera sensor artifacts, there are actually geometric lines etched into the lunar surface in the image above, captured by NASA’s Lunar Reconnaissance Orbiter. But these aren’t the work of ancient aliens (or Richard Hoagland’s favorite Photoshop filters) – they’re tracks left by the Soviet rover Lunokhod 2 during its exploration of the Moon in the first few months of 1973, immediately following the end of the Apollo missions.
If you’ve been a faithful reader of Lights in the Dark over the past five years you know that I just love Cassini (and you probably do too!) In orbit around Saturn since 2004, Cassini has taken us on an intimate tour of the Saturnian system for a decade now, revealing the incredible beauty of the ringed planet and its family of moons like no spacecraft ever has before. Thanks to Cassini and the Huygens probe, we have seen the surface of Titan for the first time, witnessed the jets of Enceladus, discovered many previously-unknown moons (and moonlets) and basically learned more about Saturn over the past ten years than since Galileo first pointed his telescope at it.
Although nearing the end of its life span, Cassini still has a few good years left and scientists are taking full advantage of its remaining time around Saturn to learn as much as they can before the spacecraft makes its final dive into the planet’s atmosphere in 2017.* The video above shows what awaits Cassini in the years ahead — some of its best discoveries may be yet to come. Check it out!
*The exact plan for the end of Cassini’s mission has not yet been finalized.
While it may not be a true “smoking gun” (there have been four and a half billion years of cooling off, after all!) scientists in Germany have found further support for the currently accepted scenario of the origin of our Moon, based on chemical analysis of rocks brought back by Apollo astronauts. (And yes, we really went to the Moon.)
It used to be said with confidence by even grade-school kids that the largest storm in the Solar System was Jupiter’s Great Red Spot, which has been churning for at least 350 years and could fit three Earths across it. And while it’s true that the GRS is a truly enormous hurricane by Earthly standards, these days it’s not as “great” as it used to be — over the past couple of decades the GRS has shrunk to only about a third of its former size.
“Recent Hubble Space Telescope observations confirm that the Great Red Spot (GRS) is now approximately 10,250 miles across, the smallest diameter we’ve ever measured,” said Amy Simon of NASA’s Goddard Space Flight Center in Greenbelt, Maryland.
That equals about 16,500 kilometers, or about one and one-third Earths across. Which is still very big, yes, but nothing compared to what it once was!
When you write about space as often as I do (and use a laptop with a big NASA sticker on the cover no less) you’re occasionally going to get the question posed to you: did we really land on the Moon? (That, and “do you believe in UFOs?”) And with this year marking the 45th anniversary of the Apollo 11 Moon landing — which, by the way, most definitely happened — and this particular weekend being 45 years since the Apollo 10 “dress rehearsal” lunar orbiting mission, I thought I’d assemble a list of a few oft-purported “proofs” of a Moon landing hoax… and then let you know why they’re completely wrong.
You’ve probably heard a few of these before…
Earth isn’t the only planet with auroras — any world with a magnetic field and an atmosphere can get a light show around its poles when its star’s wind is blowing hard enough!* The image above shows Saturn’s northern lights, as seen in ultraviolet light by the Hubble Space Telescope’s Advanced Camera for Surveys in April 2013.
See the full lineup of images below: