Activity for Leezard
| Type | On... | Excerpt | Status | Date |
|---|---|---|---|---|
| Question | — |
By how much would I need to suddenly increase Earth's gravity to give an extinction-level event? Assume Earth of today was altered overnight. Some percentage of the more common elements of Earth's bulk (silicon, iron, and so on) are replaced with something much heavier. This changes the over mass of Earth and its gravity increases according. How much of a change to gravity would it take to ... (more) |
— | about 7 years ago |
| Question | — |
How fast could earth orbit the sun without its orbit changing? It takes the Earth about 365.25 days to orbit the Sun on its current elliptical path. That means it moves about 30 km/s, 2×π×(149,600,000 km)/(1 year). So, given that, how high could Earth's velocity go before its orbit changes? (more) |
— | about 7 years ago |