Outer Space
The technology we (or aliens) need for long-distance interstellar travel
Interstellar distances are vast, and extremely advanced technology will be required if we (or aliens) want to visit other star systems.
How NASA is planning to prevent a Martian plague
When Mars samples arrive, they may carry more than knowledge. To offset the chance of a Martian pandemic, NASA is learning to contain a Red Planet plague.
This logarithmic view of the Universe will blow your mind
From here to the limits of what we can see, here's a breathtaking illustrated logarithmic view of the Universe.
There are more galaxies in the Universe than even Carl Sagan ever imagined
There are between 6 and 20 trillion galaxies out there. Carl Sagan's "billions and billions" was far too low of a guess.
The Universe is flat. Here’s what that teaches us.
When we measure it, we find that our Universe really is flat. Here's what we can learn from that, and why it matters so much.
Newly discovered exoplanet may be first covered in liquid water
The first ocean planet may have just been discovered in the “Goldilocks zone” of a star 100 light-years from Earth.
A new nova disappeared faster than ever, and an even bigger cosmic catastrophe is coming
Today, the fastest-ever nova to fall off has been discovered, and even faster ones may be out there. What comes next?
Listen to the sound of a black hole, remixed by NASA
NASA scientists have “remixed” the incredibly deep sounds emitted by a black hole 240 million light-years away.
NASA-funded scientist says “MEGA drive” could enable interstellar travel
The mega drive might provide enough thrust for a spacecraft to travel near the speed of light using only electricity, says one physicist.
Black hole mergers obey the laws of thermodynamics
An analysis of the gravitational wave data from black hole mergers show that the event horizon area, and entropy, always increases.