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37 Questions

Does my shipboard computer slow down as I approach light speed?

Can I produce a true 3D orbit?

What are the safety margins for destroying a planet from space?

How can Santa defend himself?

Is it realistic to believe an apocalyptical setting can last 500+ years?

Is there any material today that could withstand the impact of a baseball at 0.05c?

My magic system “pays the price” by drawing its energy from the future: should that affect luck, heat, or life?

How would prolonged use of augmented-reality combat gear affect soldiers?

Would it be reasonable that vampires cannot drink just any blood type save O-? [closed]

What would the night sky look like for a world on the upper plane of the galaxy, near its rim?

Are there physiological traits common to all tool-building species?

Is there a habitability zone between the primary and secondary stars of a binary star system?

Would interplanetary transmissions in the Wolf 359 star system be detectable by Earth?

Is it possible to make high-compressive-strength cement on Mars?

Habitability of a world inside a dark nebula

What technologies might lead to or support “perfect recycling”

Can a collision with a neutron star make a planet via the can-o-snakes method?

Could an astronaut in a near-future space ship survive transit through our asteroid belt?

Feasibility of a purely mechanical grayscale “computer monitor”

Smartphone camera resolution can image a human retina: can we save retina biometrics?

I cast my stop-time spell and really, really, really want to punch my sworn enemy - which of these two scenarios is more believable?

How likely is the flotsam of a space battle to be captured by our sun's gravity well?

Could solar sails and solar wind plausibly decelerate a ship traveling at 0.05c?

Can a 2D object living in a shadow be examined in a 3D world?

How far can a human see?

Perceiving color like a native

What happens when genetics and popular politics collide? [closed]

Would Gravero! experience a massive heat blast after crushing an enemy into a diamond?

Worldbuilding & Climate: How does the sun affect a simple sphere with atmosphere?

Could plant life evolve on a world with a toroidal magnetic field?