These Astronomy Basics Will Help You Avoid Embarrassment If You Meet Neil DeGrasse Tyson

Astronomy Basics Eclipse

Oh, hi Sauron! The Ring is over there. Don’t hurt us, okay? Source: MPE

Space is really cool. Like, cooler than the coolest thing ever. Some people find it boring, but that’s probably because astronomers sometimes speak an arcane language that doesn’t connect the intrinsic coolness of what they do for a living with whatever dumb thing is going on here on the muddy Earth. Also, there’s math. Lots and lots of math seems to be involved, as does some really expensive viewing equipment.

But the thing is, you’re in space right now. Earth is part of space, so it behooves you to know a thing or two about the neighborhood. As most of us don’t have access to multimillion-dollar telescope arrays (sadly), here’s some stuff that’s reasonably close and doesn’t require a degree in physics to understand. Some of the things in this gallery are visible with the unaided eye, some take a nice set of binoculars or a cheap telescope to spot, and some couldn’t be found without a billion-dollar orbiting space telescope.

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Astronomy Basics Lagrange Diagram

Trojan asteroids are a lot of fun. They're stuck in little pockets of stability where gravity and centrifugal force (the tidal force, if you're a pedant) cancel each other out and produce something like a net-zero force on objects that blunder into them. These are Lagrange points, and every set of orbiting bodies has five of them. Because it takes more energy to escape a Lagrange point than it does to stay in one, these points hold some of the oldest stuff in the solar system. Trojan asteroids have generally spent the last 4.5 billion years just sort of slowly oscillating around a single point in space like a marble in the bathtub, which means they're a pretty good example of the material that was originally in the cloud that condensed to make, among other things, us. Source: Wikipedia

Astronomy Basics LaGrange Asteroid

Another neat thing about Trojans is how hard they are to see. After their existence was first predicted, astronomers turned their telescopes to one of the nearest spots, L5—just to the right of the Moon, and saw nothing. It turns out that they were looking wrong. Telescopes peer deeply into tight little spots, but seeing these dim, scattered asteroids takes a wide angle. Amusingly, the human eye is better at spotting close-in Trojans than telescopes are, if only because we can see the forest for the trees. This Trojan, however, is 2010 TK7. It's in the Sun-Earth L4 point, and it's a bit too close to the Sun to be easily seen, hence the crappy resolution. See the dot in that little green circle? It's a 1,000-foot asteroid that took a space telescope to spot simply because of the Sun's glare. It's the first Earth Trojan ever found, and we have no idea how many more there could be. Source: WIkipedia

Astronomy Basics Orbit

The green line traces out 2010 TK7's figure-8 path around the Sun. Which it's been doing for longer than life has existed on Earth. Source: Wikipedia

Astronomy Basics Lunar Crater

Looking at the Moon through any decent telescope, or even through really good binoculars, is enough to put you in an alien world. A place without air, water, or life usually doesn't erode quickly, so almost every black eye the Moon has gotten in the last 4 billion years has left its mark. How long is that? Imagine how long you'd have to wait for an asteroid to hit your house. Now, imagine how long it would take for another asteroid to hit the crater left by the first one. That's how slow things go on the Moon. Note: it's a lot easier to pick out details like this during quarter- and half-moons when sunlight is streaming in from a low angle. Source: Astrosurf

Tranquility Base

Tranquility base, site of the Apollo 11 landing. High-resolution images reveal that the flag was knocked over by wash from the rockets when the LM lifted off. The other flags from later missions seem to be fine, though. Source: ASU

Apollo 16

Source: Area Voices

Astronomy Basics ISS Transit

The International Space Station isn't that high up. Here it is crossing the Sun in 2010. You probably shouldn't try seeing this without special equipment. Source: Reddit

Astronomy Basics ISS Night

The ISS again. Imaged with a long exposure to capture its transit across the sky. Source: Universe Today

Astronomy Basics ISS Atlantis

ISS and the Space Shuttle Atlantis. You can't see this anymore because the US government sucks. Source: Maryland Weather

Astronomy Basics ISS Discovery

ISS and Discovery. Source: Wordpress

Astronomy Basics Saturn

You can get a pretty good view of several planets through a medium-power telescope set up in your back yard. This is Saturn, duh. Source: Reddit

Astronomy Basics Saturn Moons

Source: Pix Good

Astronomy Basics Jupiter

Source: Pho Win

Astronomy Basics Jupiter Moon

Jupiter with a few of its moons. Source: Wordpress

Comet Australia

Occasionally, the universe tosses astronomers a treat. This image of Comet Lovejoy was taken through an 8-inch telescope. Source: National Geographic

Comet Soaring

Source: El Correo

Comet Moon

Source: Telescope

Astronomy Basics Eclipse VIolet

Earth isn't anything special, as far as planets go, but we do have one thing that's guaranteed to bring in some space-tourist money when we make contact with aliens: total solar eclipses. It's a coincidence that the Moon and the Sun have an almost identical annular size as seen from Earth's surface. This coincidence is what allows the Moon to completely block the disk of the Sun and bring out the blazing corona. Source: Wolaver

Astronomy Basics Eclipse Night

If the Moon was bigger or closer, it would block too much of the Sun to get this effect. If it was smaller or farther away, it would just dim the Sun a bit during transit. This view is unique in our solar system, and it might not be very common in the universe. Source: Astronomy

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The Most Amazing Nebulae Photos Ever Taken

Carina Nebula

This is the absolutely gigantic Carina Nebula. The infrared image taken using ESO’s VLT (Very Large Telescope and yes, that is the actual name) shows details and features previously unseen. Source: European Space Organization

A nebula is basically a giant cloud of gas found in space. The gas in question is mostly hydrogen mixed with helium, dust, other ionized gases and whatever else might be floating around way out there. There was a time when we used the term “nebula” to refer to any astronomical object that was too far away to see clearly, including star clusters and even galaxies.

Nebulae Photos Butterfly

This nebula is officially called NGC 6302, but it’s more popularly referred to as the Butterfly Nebula. Despite its delicate name, the wing-like areas are actually the result of a dying star casting off its gaseous shell during its final moments. Source: Space Telescope

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NASA Can Email Objects To Space

International Space Station commander Barry Wilmore needed a wrench. Normally NASA would send one up on the next mission to the International Space Station. It would arrive eventually, but that would have left Wilmore waiting for months. Instead, NASA “emailed” one to Wilmore and he printed it out right there on the ISS.

NASA emailed a wrench to space

Commander Barry Wilmore with his 3D printed wrench. Source: Wired

Commander Wilmore’s wrench wasn’t the first object 3D printed in space, but it was the first object to be designed on Earth and then transmitted into space for manufacture. California company Made In Space designed the 3D printer Wilmore used as well as the ratcheting socket wrench that made history.

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10 Stargazing Sites To Make You Feel Wonderfully Small

There are very few moments more humbling than when you gaze up at the night sky and see the massive world around us, which nevertheless represents just a tiny fraction of the Universe we live in. At least in theory. If you’re a city dweller, heightened light pollution means that if you bother to look up at all, you’ll see maybe a handful of stars. You really need to be in a dark, cloudless area with a wide sky to enjoy the cosmic spectacle to its fullest. But fear not, fellow stargazer, for such places still exist.

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The Grand Canyon, Arizona

Stargazing Sites Grand Canyon

There are few places out there better for stargazing than the Grand Canyon, which is why “star parties” are regularly hosted here. Best of all, you can marvel at the sky at night and enjoy the magnificence of the canyon during the day. Source: Lightcrafter

Galloway Forest Park, Scotland

Stargazing Sites Galloway

A few hours away from Glasgow, Galloway Forest Park is known as a Dark Sky Park and its primary attraction is, you guessed it, the wonderful night sky. Proving that there are indeed many shades of black, the Dark Sky Association uses the Bortle Scale in order to determine Galloway’s degree of darkness. At Bortle 2, Galloway Forest Park is about as dark as you can get on land. Source: Crichton Cross

Headlands National Park, Michigan

Stargazing Sites Michigan

Another great Dark Sky Park is located in the Michigan Headlands. Besides a great view of the stars, on certain nights you can even see the Northern Lights. Source: Michigan Radio

Westhavelland Dark Sky Reserve, Germany

Stargazing Sites Germany

Just a few hours away from Berlin is the Westhavelland Dark Sky Reserve, a place that offers one of the darkest and clearest skies in all of Europe. Source: Distractify

Atacama Desert, Chile

Stargazing Sites Atacama

If you want to feel like you are on an alien planet while simultaneously gazing at the rest of the Universe, there’s no better place than the Atacama Desert. Several observatories are located here because of the excellent view of the sky. Source: Kit Skinny

Denali National Park, Alaska

Stargazing Sites Alaska

Without a doubt, one of the most wondrous spectacles the sky has to offer is the Northern Lights. If you want to see them in all their splendor, the Denali National Park in Alaska is one of the best places on Earth to do so. Source: Enjoy Your Holiday

National Bridges National Monument, Utah

Stargazing Sites Bridge

If you want a truly unique perspective, head on over to Utah and use the beautiful night sky as the backdrop for the stunning Owachomo natural bridge. Source: NPS

Mont-Megantic Dark Sky Reserve, Canada

Stargazing Sites Canada

Last but not least is Mont-Megantic International Dark Sky Reserve in Canada. It is part of a National Park and also has a state-of-the-art observatory built in order to take advantage of the dark skies lit up only by thousands and thousands of stars. Source: Rice MM

Mauna Kea, Hawaii

Stargazing Sites Hawaii

Because of its elevation and distance from the city lights, Mauna Kea is an ideal spot for stargazing, which is why it also houses some of the most advanced observatories in the world. Pictured here is a rare close encounter between Venus and Jupiter shown in the center. Source: Subaru Telescope

Aoraki Mackenzie Dark Sky Reserve, New Zealand

Stargazing Sites New Zealand

Another place declared a Dark Sky Reserve due to its beautiful night skies, Aoraki Mackenzie is found on the South Island of New Zealand. Getting there might be a bit tricky, but well worth it for enthusiastic stargazers. Source: Land And See

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