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@quantumaniac
Since it’s the first thing someone considers buying a new telescope, Israeli astronomer Michael Vlasov illustrates which views can you expect to get through different telescopes.
On his page, he covers the Moon, planets, Sun, Deep sky objects, comets, double stars, light pollution, and shares a lot of other useful information.
Image copyright © DeepSkyWatch.com 2015
NGC 3576 Nebula
5 megabyte hard drive being shipped out (IBM,1956)
The Movement of Barnard’s Star
The fourth closest known star to our Sun (following the Alpha Centauri stars), Barnard’s Star is famous for having the largest known proper motion of any star. Proper motion is the measure of the observed changes in a star’s position against the distant background stars and in 1916, E. E. Barnard measured this star’s proper motion to be 10.3 arcseconds per year. This corresponds to a speed of 90 km/s across our line of sight.
This movie by RickJ, posted in the CosmoQuest forums, shows the movement of Barnard’s Star over 9 years. Each frame represents one year between 2007 and 2015.
Image: The proper motion of Barnard’s Star over the last 9 years. (Credit: RickJ)
as mentioned in these previous posts, kilauea, a flat broad shield volcano, has erupted continuously from its pu’u o’o vent since 1983, growing the island by about 42 acres a year as its basaltic lava flow oozes at a speed of fifteen yards an hour into the ocean. photos by tom kuali.
The nine-year, three-billion-mile voyage of NASA's New Horizons probe is undoubtedly a testament to the genius of mankind — yet the same praise might not be raised for NFL stadiums. You wouldn't know it from the price tag, though. In fact, sending a probe to a planet so far away that it takes light five-and-a-half hours to reach is kind of on the cheap side! It cost $720 million to reach Pluto — by contrast, the construction of the new Minnesota Vikings stadium will cost $1 billion, CBS reports. Metlife Stadium, in New York, cost $1.6 billion to build, and the world's most expensive stadium, Tokyo's forthcoming 2020 Olympic arena, could cost $2 billion (the Pluto trip was a mere 36 percent of the latter's cost). Further, the worldwide gross of Fast and Furious 7 made $800 million more than it cost to send a probe to the far reaches of our solar system (and even The Twilight Sage: Breaking Dawn Part 2 made $109 million more than New Horizons' entire budget). And as gas prices jump during their summer spike, keep this tidbit in mind: New Horizons only costs $0.24 a mile — and it will keep going for years.
Here’s something to think about when enjoying New Horizon’s beautiful images.
Space Rovers
Visualising numbers (100, 243 and 12) by splitting them into all possible factorisations. [code]
This image showing dental work on a mummy from ancient Egypt is evidence of ancient dentistry. Archaeologists believe this mummy was from around 200 BCE.
Fruit Images & Wasabi Meds
Yes, that’s a strawberry as seen from under the microscope. Wait ‘til you see what a peach looks like zoomed in. For more “Whoa!”, the burn from wasabi could be useful in developing new pain medications. What we’re reading…
The planet Jupiter, 4 March 1979, observed by the Voyager 1 space probe from a distance of 1,800,000 km. (NASA)
9 horrifying photos show what people are really doing to the planet
People rarely think about their waste beyond the curb, and it’s leading us to a dark place. The post-apocalyptic landscape we see in movies already exists in far too many places. The photos from Israel and Buenos Aires are just as bad — or worse.
Recycled PET Plastic Bottle Plant Sculptures by Veronika Richterová
54th Anniversary of First American in Space
Today, 54 years ago, Alan Shepard became the first American in space when the Freedom 7 spacecraft successfully took off from Florida on May 5, 1961. A decade later, Shepard would return to space to become the fifth man to walk on the moon — and the first one to play golf there.
During the mission, Shepard said: “It's a very sobering feeling to be up in space and realize that one's safety factor was determined by the lowest bidder on a government contract.”
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From Astromic Picture Atlas by Ludwig Preyßinger 1851 via 50 watts
A New View of the Elephant’s Trunk Nebula This image is composed of data from the INT Photometric H-Alpha Survey (IPHAS), including narrow-band H-Alpha (red) and broad-band Sloan r’ (green) and Sloan i’ (blue) filters. Image credit: Nick Wright (University of Hertfordshire, SAO), Geert Barentsen (University of Hertfordshire, Armagh Observatory)
