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GOAL Ace Astronomy Quiz 2 covering LT 1-8, 11-15

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GOAL Ace Astronomy Quiz 2 covering LT 1-8, 11-15

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*Astronomy booklet pg 10-13 & Read, Watch, Respond to Space Junk articles and video.

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*Astronomy booklet pg 10-13 & Read, Watch, Respond to Space Junk articles and video.

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A Kilonova occurs when 2 Neutron stars collide creating an explosion brighter than a supernova.

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209 seconds that will blow your mind vid.

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209 seconds that will blow your mind vid.

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*Astro Quiz 2
*Read, watch, & respond to Space Junk articles and video clip. pg 72

-Why is space junk dangerous?
-About how much junk is orbiting Earth?
-How does the ISS avoid space debri?
-List 3 interesting items dropped in space and why they interest you.
**Use complete sentences.

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Space Debri

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Don't let the name fool you; despite their small size, dwarf planets are worlds that are just as compelling as their larger siblings. Dwarf planets are defined by astronomers as bodies massive enough to be shaped by gravity into a round or nearly round shape, but they don't have enough of their own gravitational muscle to clear their path of other objects as they orbit the Sun. In our solar system, dwarf planets are mostly found in the Kuiper Belt beyond Neptune; Pluto is the best-known example. But the largest object in the asteroid belt is the dwarf planet Ceres. Like Pluto, Ceres shows signs of active geology, including ice volcanoes.

Besides Pluto, some of the mysterious worlds of the Kuiper Belt include dwarf planets Makemake, Haumea, and Eris. Like asteroids and comets, Kuiper Belt objects are time capsules, perhaps kept even more pristine in their icy realm.

OSIRIS-REx - Now heading home to Earth from asteroid Bennu where it retrieved a sample.

New Horizons - On Jan. 1, 2019, the spacecraft flew by the small Kuiper Belt object officially known as Arrokoth - or by its original designation (486958) 2014 MU69 - the most distant and most primitive object ever explored by a spacecraft. Images showed a double-lobed object that looked like a partially flattened snowman.

Psyche - The spacecraft will explore a metallic asteroid of the same name, which may be the ejected core of a baby planet that was destroyed long ago.

Lucy - Lucy was launched on Oct 16, 2021, on the first space mission to explore a population of small bodies known as the Trojans. The Trojans are outer solar system asteroids that orbit the Sun "in front of" and "behind" the gas giant Jupiter, at the same distance from the Sun as Jupiter.

Dawn - Dawn launched in 2007 and visited two-time capsules of the solar system - asteroid Vesta and dwarf planet Ceres, the largest bodies of the main asteroid belt.

The Japan Aerospace Exploration Agency (JAXA)'s Hayabusa2 - The spacecraft studied asteroid Ryugu, collected samples, and brought them to Earth for analysis. The spacecraft is on an extended mission to asteroid 1998 KY26.

The European Space Agency (ESA)'s Rosetta - Orbited the comet 67P/Churyumov-Gerasimenko and dispatched a lander to its surface.

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10 Things: What's That Space Rock? - NASA Science

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The path through the solar system is a rocky road. Asteroids, comets, Kuiper Belt Objects-all kinds of small bodies of rock, metal and ice are in constant motion as they orbit the Sun. But what's the difference between them? Why do these miniature worlds fascinate space explorers so much?

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Space Debri

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Humans have ventured into space over the last 50 years, and all manner of junk has been left behind. From tiny bolts to whole space stations, people have discarded lots of stuff up there. Much of it eventually dies a fiery death as it falls through Earth's atmosphere, but some larger debris poses risks for astronauts and spacecraft that could collide with it. Here are some of the quirkier items left in space:

1. Spatula
While spreading some goo as a test of heat-shield repair materials, spacewalking astronaut Piers Sellers accidentally lost a spatula he had been using. The mishap took place during the space shuttle Discovery 's 2006 STS-121 flight to the International Space Station, on a mission to test new safety techniques after the 2003 Columbia disaster. "That was my favorite spatch," Sellers reportedly said. "Don't tell the other spatulas."

2. Tool bag
Astronaut Heide Stefanyshyn-Piper lost her grip on a tool bag while doing a spacewalk in November 2008 to try to repair a jammed gear on a space-station solar panel. The 30-pound bag, filled with grease guns, a scraper tool and a couple of bags for debris, cost about $100,000. Amateur astronomers spotted subsequently spotted the bag in orbit, and North Americans can check to see if the tool bag is in their slice of the sky with Spaceweather.com's satellite tracker. Watch the bag float away below. http://www.spaceweather.com/flybys/?PHPSESSID=v5r9ilmkqgek0vcqoq2svcenr2

3. Glove
Starting out the long trend of astronauts losing stuff in space, the very first American spacewalker, Ed White, let go of a glove during his first extra-vehicular activity on the 1965 Gemini 4 flight. The glove stayed in orbit for about a month before burning up in Earth's atmosphere.

4. Tank of ammonia
This one was lost on purpose. In July 2007, NASA instructed astronauts to throw an unneeded 1,400-pound tank full of ammonia overboard. The device used to be part of the space station's cooling system, but when the A/C was upgraded, it became obsolete. Deeming that it would take up too much cargo room to carry it back to Earth, mission managers decided to have it trashed. More than a year later, the tank burned up over the South Pacific Ocean as it hit the atmosphere.

5. Gene Roddenberry's ashes
A portion of the ashes of Gene Roddenberry, creator of the Star Trek series, were delivered to space in 1992 by the space shuttle Columbia on its STS-52 mission. The lipstick-sized capsule containing his ashes orbited the Earth before eventually disintegrating in the atmosphere. The rest of Roddenberry's ashes, along with those of his wife Majel who died in December 2008, will be shipped into space along with digitized fan letters in 2010.

6. Pee
Over the years, most of the urine produced by astronauts has been simply dumped overboard. Once pee hits the cold vacuum of space, it quickly freezes into tiny crystals which then float around as debris. (Astronauts have described watching urine being released into space as one of the most beautiful sights in orbit). Recently, however, a new pee-recycling system was brought up to the International Space Station to turn urine into drinking water, cutting down on the pee debris.

7. Pliers
While repairing a damaged solar array during a November 2007 spacewalk, astronaut Scott Parazynski accidentally lost a set of needle-nose pliers, which were spotted floating away below the station.

8. Camera
Astronaut Suni Williams was tussling with a stuck solar array on the space station in June 2007 when her camera came untethered and drifted away. Rather than astronaut error, this incident may have been caused when the button holding down the camera broke. Watch video of the mishap below.

See Also:
Image: Illustration of amount and spread of space junk around Earth based on real data/ESA

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Lost in Space: 8 Weird Pieces of Space Junk

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Humans have ventured into space over the last 50 years, and all manner of junk has been left behind. From tiny bolts to whole space stations, people have discarded lots of stuff up there. Much of it eventually dies a fiery death as it falls through Earth's atmosphere, but some larger debris poses risks for astronauts and spacecraft that could collide with it.

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The amount of space junk around Earth has hit a critical point

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Get access to files anywhere through secure cloud storage and file backup for your photos, videos, files and more with Google Drive.

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Characteristics of the Universe Notes, Part 1

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Distances in space are enormous - so big that our standard units of measurement, kilometres and miles, are just too small to be useful. So scientists use something else - the light year. But what is it and how does it work? Dr Tim O'Brien from the Jodrell Bank Centre for Astrophysics at the University of Manchester explains.