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Oscar Lanzi's user avatar
Oscar Lanzi's user avatar
Oscar Lanzi's user avatar
Oscar Lanzi
  • Member for 3 years, 10 months
  • Last seen this week
37 votes

What is the pressure at the center of the Earth?

37 votes

Is it a coincidence that the circumference of the Earth in kilometers is almost $2^{12}$?

37 votes
Accepted

Why is geothermal heat insignificant to surface temperature?

17 votes

Other than tectonic activity, what can reshape a world's surface?

15 votes

Would hurricanes on an ocean planet continue indefinitely?

13 votes
Accepted

Why is Earth's density gradient a step-function, rather than smooth?

7 votes

How can the 'crystal cleavage' of apatite have a four-digit number?

6 votes

Do carbon dioxide hydrates exist in nature?

6 votes
Accepted

Measuring the circumference of the earth - revisited

5 votes

Can there be ice in the core because of pressure?

5 votes
Accepted

What would be the effect of a geostationary moon?

5 votes

Why does calcium occur together with felsic rocks and magnesium with mafic rocks if calcium is denser than magnesium?

5 votes
Accepted

What is the southernmost landmass not covered by the Antarctic Treaty?

5 votes

Why don't most organisms use magnesium in their shells and bones if it is lighter and more common than calcium?

4 votes

How to quickly or easily prove the world is spherical?

4 votes

Are there minerals which are not been found on earth but which are still possible to exist?

4 votes

What kind of clouds did Joseph Kittinger see at 102,000 ft?

4 votes
Accepted

Soil metals acids and bases

4 votes

If the universe (and our galaxy) has about twice as many oxygen atoms as carbon ones, why does Earth have 300 times as many oxygen atoms as carbon?

4 votes
Accepted

The Pacific Northwest is about to endure the hottest temperatures in recorded history. What is the atmospheric setup causing it?

4 votes

Composition of Martian Crust

3 votes
Accepted

Can Cirrocumulus and Cirrostratus appear at the same time?

3 votes

Why should there not be water deep (e.g. below 6 kms) in the Earth's crust?

3 votes

What would happen to the earth if we removed nearly all of the air?

3 votes
Accepted

How do subsurface oceans form under a rocky crust?

3 votes

Now Mars is pulsing 3 times per night in the UV, can anyone explain these waves in simple terms? Do these waves have analogies on Earth?

3 votes
Accepted

Are there any sulphides, sulphates, carbonates that cannot be dissolved by aqua regia?

3 votes

Is Earth's atmosphere 1600 km thick?

3 votes

Will increased level of ocean acidity lead to more frequent acid rain?

3 votes
Accepted

Is Alert (in Canada) a harbor/port?