PV Gap

Eddie Said:

Which thesis sounds the best?

We Answered:

The most concise thesis is number 4.
It is well written and easily understood.

Larry Said:

Diameter of the solar system is approximately: 7,500,000,000 miles.?

We Answered:

First off, this would probably be better served in the astronomy section, although I'm guessing that many of the folk there also browse here (as I do).

Second, your instructor is not very good with astronomy. There are now eight planets, not nine. Pluto has been demoted to a group of now six dwarf planets. So the size of the main Solar System is either two times the distance to Neptune, or the distance to the furthest dwarf planet (Eris, about 6,300,000,000 miles from the Sun). You might want to look at the further regions of the Solar System. They are called the Kuiper belt and the Oort Cloud.

Regarding you little car trip, I can tell you that driving to Mercury is 36,000,000 miles divided by 60 miles per hour, giving 600,000 hours, or 25,000 days, or about 68 1/2 years. And the distance to Mercury in scientific notation is 3.6 times ten to the seventh power.

John Said:

interesting/unusual planet facts?

We Answered:

Here are some cool ones:
- Uranus is the only gas giant in the Solar System that has no 'large' moon orbiting it.
- Neptune's largest moon, Triton, orbits in the opposite direction as Neptune's own rotation. This means that, rather than slowly getting farther away from Neptune over time as the Earth's moon is getting farther away from the Earth, Triton is actually getting CLOSER to Neptune, and in a few hundred million years will break apart and form a system of rings around Neptune similar to Saturn's rings.
- Saturn, in the meantime, has a giant hexagonal cloud formation near one of its poles. So far scientists aren't sure what is causing the hexagon to form (although aliens are not currently high on the list of suspects).
- Mars has the highest mountain in the Solar System, Olympus Mons, which is not only three times higher than Mount Everest, it is also an extinct volcano.
- Mars is also the only rocky planet in the Solar System with more than one moon. Both its moons, Phobos and Deimos, are very small and were probably captured from the asteroid belt.
- Mercury has actually been slowly shrinking over time due to its metallic core cooling and contracting. This has caused the crust to buckle in places as it settled onto the shrinking core, creating enormous cliffs several kilometers high and hundreds of kilometers long. It's too bad tourists can't go there for the view just yet; the day side of Mercury reaches several hundred degrees celsius and would roast you in a few minutes.
- Jupiter holds a position as the only planet which has been observed to have a comet collide with it; in 1994, the comet Shoemaker-Levy 9 broke up over Jupiter and the pieces crashed into the jovian atmosphere, creating marks even larger than the Great Red Spot.

Billie Said:

HOMEWORK HELP!!! YOU HAVE TO HELP ME!!! PLZ... WAITING FOR THE BEST ANSWERS!!!?

We Answered:

Calm down.
Go to a popular news website like www.NewYorkTimes.com, www.WashingtonPost.com, or LosAngelesTimes.com.
Or you could go to YahooNews

Virginia Said:

do want you know some interesting facts?

We Answered:

great stuff. thanks