She may not be ours forever.
- A new study suggests that the moons of gas-giant exoplanets may break away into their own orbits, called "ploonets."
- Planet + moon = ploonet.
- As the gas giants move inward toward their suns, the orbits of their moons are often disrupted, according to new computer models.
What will it take to conquer our immemorial space dream?
- Our best bet for frolicking among the stars will come from building O'Neill space colonies.
- Landing on and terraforming distant worlds such as Mars is fraught with greater technical and biological difficulties.
- Advances in radiation shielding, space construction and propulsion are needed for any sort of space colonization effort.
Astronaut company Virgin Galactic will become first to be publicly traded.
- Richard Branson's Virgin Galactic will go public later this year.
- People will be able to buy shares when Virgin Galactic merges with a shell company.
- The company aims to raise enough capital through investment to sustain itself until profitability.
When it comes to theories of the universe, the Big Bang theory is almost accepted as a fact. However, it's still uncertain, and some scientists believe that the universe didn't began with a bang, but a bounce.
- The Big Bang theory is treated as the de facto way the universe began, but it's had some issues.
- One issue was that it could not describe how the universe became uniform and homogeneous, which is what we observe today.
- Physicists tweaked Big Bang theory to accommodate this, but the Big Bounce theory can address these issues without too much tweaking.
While the world considers future trips to Mars, two astrophysicists make a case for exploring asteroids.
On the same day that the Earth survived an expected near-miss with asteroid 367943 Duende, Russian dashcams unexpectedly captured footage of a different asteroid as it slammed into the atmosphere, exploded, and injured more than 1,000 people.