Space

Aliens might be hitching rides across the Milky Way, Harvard physicists say

Dr. Avi Loeb calls them 'tiny astronauts sitting in a natural spacecraft.'

Why this has been a big week for the search for aliens

Space archaeology, radio signals from the far reaches of the universe and much more made headlines.

In next generation of space race, Israel is at the forefront

Elon Musk’s SpaceX will launch an Israeli spaceship to the moon. And that's just the beginning.

98 people needed to survive 6,000-year journey to new planet

Harvard scientist offers alluring alternative option: 'Carry their DNA blueprints and reconstruct them over there.'

Some people can actually hear shooting stars

Scientists may have cracked a puzzle that's been confusing people for centuries.

Episode 1: Avi Loeb, Harvard astronomer and alien hunter

In the debut episode of 'Our Friend from Israel,' we chat with Dr. Avi Loeb about why he's searching for aliens and a new Earth for humans.

Stephen Hawking's search for aliens just got a major boost

One of the physicist's final projects is now one step closer to finding extraterrestrial life.

We just discovered something new about Jupiter's mysterious stripes

American space probe Juno is uncovering secrets about our solar system's favorite gas giant planet.

Did scientists just discover dark matter?

One of the biggest mysteries of physics may not be a mystery for much longer.

There's another Earth out there, and a massive fireball may have just obliterated it

Harvard scientist reveals how it still might be possible for us to move there.

Team builds habitat to simulate life on Mars

The shelter will be located near a 25-mile-wide, 200 million-year-old crater in southern Israel.

Super blue blood moon shines over Jerusalem

The rare lunar event stunned skywatchers around the world.

Here’s why this Harvard astrophysicist keeps looking for aliens

Professor Avi Loeb thinks extraterrestrial life could teach us about ourselves and our world.

Harvard scientist reveals a plan to listen for aliens Wednesday afternoon

After discovering a mysterious object hurtling through space, the world's largest telescope is tuning in at 3 p.m. EST. And the world will be listening.

The strangest things we learned in 2017

We discovered so much odd stuff this year about aliens, tigers, apocalypses, goats, lawns and even Albert Einstein.