Do you know how long a tardigrade can survive in space? How much gold is in seawater? How long it’s been since it rained in Antarctica’s Dry Valleys? There are a whole lot of amazing facts about our planet and this infographic has 50 of them (and while seemingly unbelievable, they’re all true!) See the full version below:
In daylight our big blue marble is all land, oceans and clouds. But the night is electric.
This image of North and South America at night is a composite assembled from data acquired by the Suomi NPP satellite in April and October 2012. The new data was mapped over existing Blue Marble imagery of Earth to provide a realistic view of the planet.
The nighttime view was made possible by the new satellite’s “day-night band” of the Visible Infrared Imaging Radiometer Suite. VIIRS detects light in a range of wavelengths from green to near-infrared and uses filtering techniques to observe dim signals such as city lights, gas flares, auroras, wildfires, and reflected moonlight. In this case, auroras, fires, and other stray light have been removed to emphasize the city lights.
Although the view looking down from space is of a sparkling show, the downside of course is light pollution over major metropolitan areas which impede the view of the night sky from the ground. (Find out more at the International Dark Sky Association site.)
Read more (and watch a video of these nighttime images of Earth) below:
35 years ago today, September 18, 1977, NASA’s Voyager 1 spacecraft turned its camera homeward just about two weeks after its launch, capturing the image above from a distance of 7.25 million miles (11.66 million km). It was the first time an image of its kind had ever been taken, showing the entire Earth and Moon together in a single frame… crescent-lit partners eternally paired in space.
I must say, it brings to mind a quote by the contentious British astrophysicist Sir Fred Hoyle (who famously coined the term “Big Bang”, albeit in disparagement) –
“Once a photograph of the Earth, taken from outside, is available – once the sheer isolation of the Earth becomes known – a new idea as powerful as any in history will be let loose.”
Whatever Hoyle had in mind, it’s quite something to look at your entire planet sitting there amidst the blackness of space and kow that everything that’s ever happened to all living things that we’ve ever known about, human or otherwise, has happened right there, on the surface of that sphere. And that we look awfully small from not very far away… 7.25 million miles is only just about a thirteenth the distance to the Sun (luckily Voyager was headed the other way!)
Of course, then there’s this famous bit of eloquence by the legendary Carl Sagan.
If you haven’t seen this before, you’re probably not alone. It’s a video made from a series of several hundred images acquired by NASA’s MESSENGER spacecraft as it swung past Earth, departing forever on its journey to Mercury on August 2, 2005 — just a day shy of one year after its launch. Many blogs that are around today didn’t exist then (including Lights in the Dark!) and so there’s probably lots of people who haven’t had a chance to watch this.
I suggest you check it out. It’s very cool.
Sparked by a coronal mass ejection emitted from a sunspot on July 12, Earth’s aurora leapt into action both at the north and south poles three days later. Here we can see a view of the southern lights, or aurora australis, shimmering in green waves below the Space Station’s Canadarm on July 15.
With 7 joints of rotation, the 17-meter-long Canadarm can move end-over-end across the exterior of the ISS (attaching to Power Grapple Fixtures at either end as it goes) to allow expedition crews to manipulate objects both large and small outside the Station. Launched in 2001, it’s one of the ISS’s most essential tools.
NASA astronaut and Expedition 32 flight engineer Joe Acaba recorded the series of images from the Station’s Tranquility node.
The May 20 annular eclipse, seen by many around the world as a “ring of fire” in the sky, was also seen by the astronauts aboard the ISS — although they also got a great view of the shadow that the Moon cast on the Earth as well! This HD video, a time-lapse made from individual photos acquired by Expedition 31 crew members, shows the hazy shadow of the Moon on top of clouds over the Pacific on May 20, 2012 as the Station passed by.
Video via The Gateway to Astronaut Photography of Earth (NASA/JSC)
Glowing high-altitude ice clouds were spotted over western Asia by the crew of the International Space Station on June 13 during one of their 16 daily orbits of the planet… the photo above shows the wispy filaments shining brightly in the mesosphere above western Iraq and Uzbekistan.