Google Sky App

This is an amazing astronomy app, the app allows you to search for any planet or star. You can control if you want to see Stars, COnstellations, Messier Objects, Planets, Meteor shawors, RA/DEC grid, and the horizion or all at the same time. It also has a time travel part where you can travel to any time or place. There is also a gallery where you can look at Crab Nebula, Eagle Nebula, Andromeda galaxy and many many more. Here is the website
www.google.com/sky/

Shades of Bright and Dark Moon

(1 - 5 on brightness) 4 - the moon was so bright it was amazing

- The brightest features I can observe are on the outside aligning the end of the moon. It was a perfect half circle, it looks beautiful.

What Maria seems darkest?
On the inside in the middle there seemed to be dark crators, but they were so visible. That was where it was the darkest

Where do you see the most delicate patches of shading on the naked-eye moon?
The most delicate patches are those in the middle, since its not a full moon i cannot suggest weather they would be any place out but this particular night with this moon, the patches where in the inside and middle.

Date - June 27th
Time 11:09

Nght Sky Moon

Brightness of the moon

Date - June 15th
Time - 10:30
Moon Phase - half moon
Font Scale - 8
Distance before the moon will cast a dicernable shadow - 10 feet
distance from streetight before the moons shadow is stronger then your shadow cast by the streetlight - 20 feet

Date - june 25th
Time - 10:55
Moon Phase - Beautiful 3/4 moon perfect slit
Font scale - 6
Distance before the moon will case a dicernable shadow - 15 feet
distance from the streetlight before the moons shadow is stronger than your shadow cast by streetlight - 5 feet







I learned that when the moon is bigger the distance from the streetlight is shorter because you can see better. A week ago i could only see an 8 on the scale sheet without straining my eyes and now i can see it at a 6. It is clear that as the moon gets bigger it becomes brighter. So my shadow took longer too see on the 25th but that was because i was at a different streetlight. I found this observation be cool the moon looked so amazing I could see it perfectly and it was quite beautiful.

Test 2

d) 

1.	In the Hubble classification scheme for spiral galaxies, the tightness of the winding of the spiral arms appears to be related directly to
	A)	the age of the galaxy, as determined from the age of its individual stars.
	B)	the number of globular clusters in the halo of the galaxy.
	C)	the overall intrinsic size of the galaxy, or the diameter across the spiral arms.
	D)	the size of the central bulge of the galaxy.

2.	The typical diameter of a spiral galaxy is about
	A)	107 ly.
	B)	105 ly.
	C)	1 ly.
	D)	100 ly.

3.	What mechanism is believed to produce flocculent spiral galaxies?
	A)	Satellite galaxies plunging through the disk of the nuclear spiral galaxy
	B)	Self-propagating star formation, where star formation occurs in bursts
	C)	Shock waves from explosive star formation in the nuclear bulge
	D)	Density waves in the interstellar medium

4.	What mechanism is believed to produce grand-design spiral galaxies?
	A)	Shock waves from explosive star formation in the nuclear bulge
	B)	Density waves in the interstellar medium
	C)	Satellite galaxies plunging through the disk of the nuclear spiral galaxy
	D)	Self-propagating star formation, where star formation occurs in bursts

5.	What is the designation given to a galaxy with a large nuclear bulge and tightly wound arms starting from a bar through the nuclear bulge?
	A)	Sb
	B)	SBa
	C)	SBc
	D)	Sa

6.	How do most spiral galaxies rotate?
	A)	The arms lead as the galaxy rotates (arms point forward).
	B)	Spiral galaxies do not rotate; if they did, then the spiral pattern would soon disappear.
	C)	We do not know; they rotate far too slowly for us to have seen any motion in the time since galaxies were discovered.
	D)	The arms trail as the galaxy rotates (arms point backward). 7. What is believed to be the origin of starburst galaxies? A) The galaxies are slower rotators than other galaxies, so the slower-speed collisions between interstellar clouds produce more star formation. B) The galaxies are newly formed and are undergoing their initial, rapid star formation. C) A recent collision with another galaxy has triggered a wave of star formation. D) A recent series of supernovae has compressed the interstellar medium and started a wave of star formation. 8. What is believed to be the origin of giant elliptical galaxies? A) They formed that way and have remained unchanged ever since. B) They grew by devouring smaller galaxies. C) Collisions of galaxies in the cluster produces a smooth distribution of stars through the cluster, which sink to the center of the cluster and form giant galaxies there. D) They have grown continuously since their formation by accretion of intergalactic gas. 9. Which one of the following statements is true about clusters of galaxies? A) The observed mass of the galaxies of the cluster is many thousands of times too small to hold the cluster together. B) The observed mass of the galaxies of the cluster is about 10 times larger than the amount needed to hold the cluster together. C) The observed visible mass of the galaxies in the cluster is about 10 times too small to hold the cluster together. D) The observed mass of the galaxies of the cluster is almost exactly equal to that needed to hold the cluster together. 10. Many rich, regular clusters of galaxies contain substantial amounts of very hot, intergalactic gas. What is believed to have produced this hot gas? A) Collisions between galaxies in the cluster B) Bursts of star formation in merging galaxies C) Supernovae (exploding stars) D) Jets of gas ejected by supermassive black holes at the centers of the galaxies  1. D 2. B 3. B 4.B 5. B 6. D 7.C 8. B 9. C 10. A 1. 2. 3. 4. 5.   6. 7.   8. 9. 10..

Astronomy Quiz !

1.     Which Planet does the moon Dione Orbit around?

a)Jupiter

b) Saturn

c) Neptune

d) Mars 

2.     How far is the farthest spacecraft from Earth

a)     One light-year

b)     A little bit more then a light-month

c)     Less then a light-day

d)     Somewhat less than a light week 

3.     The central “engine” of an active galaxy appears to be
	a)	stars falling into a supermassive black hole, their remnants being thrown out in all directions.
	b)	supernova explosions in an extremely dense star cluster at the center of the galaxy.
	c)	the violent merger of two galaxies in which the collision throws out jets of matter along the rotation axis of the larger galaxy.
	d)	a super massive black hole at the center of an accretion disk, with material being projected out perpendicular to the disk in both directions.
4.     Seyfert galaxies are
	a)	elliptical galaxies with extremely bright nuclei.
	b)	supergiant elliptical galaxies that are periodically disturbed by supernova explosions within them.
	c)	spiral galaxies with extremely active cores.
	d)	active galaxies that shine mainly by radiation from two relatively widely spaced radio lobes.
5. Which observations of quasars convinced astronomers that they were very distant objects? a) Their extremely red spectrum, reddened by extreme interstellar absorption of the blue part of the spectrum, meaning that the source must be a very long way away b) Extreme redshift of visible Balmer and UV Lyman hydrogen emission lines, indicating high recessional velocities and hence, by the Hubble law, very large distances c) Their extreme faintness at visible wavelengths, the inverse square law for visible light showing that they must be very distant d) Their appearance as pointlike star images under the highest magnification, meaning that they must be very far away

6.     Of All these planets which is the smallest?

a)     Mars

b)     Neptune

c)     Earth

d)     Venus

7.     How many times has our solar system orbited the center of the galaxy since planet earth was formed?

a)     1,000,000 times

b)     1,000 x

c)     20 x

d)     Not yet one time

8.     How do most spiral galaxies rotate?
	a) The arms lead as the galaxy rotates (arms point forward).
	b) Spiral galaxies do not rotate; if they did, then the spiral pattern would soon disappear.
	c) We do not know; they rotate far too slowly for us to have seen any motion in the time since galaxies were discovered.
	d)     The arms trail as the galaxy rotates (arms point backward).

9.	What is an elliptical galaxy?
	a)	A galaxy with an elliptical outline and a smooth distribution of brightness with no structure apparent in the galaxy
	b)	A spiral galaxy seen from an angle, giving it an elliptical profile
	c)	Any galaxy with an elliptical halo when observed at radio wavelengths
	d)	A spiral galaxy with an elliptically shaped nuclear bulge and the spiral arms starting from the ends of the ellipse

	10. In which category of galaxy do we find the largest galaxies in the universe?
	a)	Lenticular galaxies
	b)	Large spiral galaxies like the Milky Way
	c)	Irregular galaxies
	d)	Elliptical galaxies ANSWER KEY - 1) B - Saturn 2) C - less than a light day 3) D - a super massive black hole at the center of an acceration disk 4) C - spiral galaxies with extremly active cores 5) B - Extreme redshift of visible Balmer and UV Lyman hydrogen emission lines, indicating high recessional velocities and hence, by the Hubble law, very large distances 6) A - Mars 7) C -  20 times 8) D  -     The arms trail as the galaxy rotates (arms point backward). 9 C 10 - B