There were two periods of exponential expansion in the Universe: one today and one long ago. Are they related? “What is wild cannot be bought or sold, borrowed or copied. […]
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Sure, they wiped out the dinosaurs, but do they really pose a risk to humans? “The oldest and strongest emotion of mankind is fear, and the oldest and strongest kind […]
A mysterious burst of methane detected by the Curiosity rover has NASA scientists wondering whether it could be a sign of life.
NASA’s High Altitude Venus Operational Concept (HAVOC) program will feature an evolutionary exploration of Venus’ atmosphere that could one day lead to semi-permanent colonies.
Without this one piece of the puzzle, everything we know falls apart. “Is no one inspired by our present picture of the Universe? This value of science remains unsung by […]
Another world orbits the Sun once a year at the same distance as our planet. “The moon was like this awesome, romantic, mysterious thing, hanging up there in the sky […]
The Universe is full of surprises. These are the biggest, plus what they mean. “Surprise is the greatest gift which life can grant us.” –Boris Pasternak So it is in […]
The unique sight of a comet only scratches the surface of an amazing story. “Without any doubt, the regularity which astronomy shows us in the movements of the comets takes […]
Many issues stand against a mission to Mars: fuel, landing, and sustaining life on the red planet are just a few. But scientists say that the astronauts that depart will not be the same — the structure of their brains will change.
If our “standard candles” aren’t so standard, is dark energy still real? “Some say the world will end in fire,Some say in ice.From what I’ve tasted of desireI hold with […]
The future of stars like our own, in a story only pictures can tell. “I lie on the floor, washed by nothing and hanging on. I cry at night. I […]
Is looking for radio transmissions in space like claiming the lack of smoke signals means there are no modern humans? “[W]hat Fermi immediately realized was that the aliens have had […]
Lessons from the Universe whenever a light goes out. “End? No, the journey doesn’t end here. Death is just another path, one that we all must take. The grey rain-curtain […]
As the Hubble Space Telescope nears its 25th anniversary, it never stops amazing us. “That I learned even as a three year-old that I see this world that is really […]
How we’re still, only now, just discovering the closest stars to Earth. “As a boy I believed I could make myself invisible. I’m not sure that I ever could, but […]
This International Women’s Day, celebrate Henrietta Leavitt, who took us beyond the stars and into the galaxies. “Her will tells nearly all. She left an estate worth $314.91, mostly in […]
Is it possible, how would it affect us, and would we be destroyed as a result? “There is a fifth dimension, beyond that which is known to man. It is […]
Many organizations are reluctant to share important information across national borders. Astronaut Ron Garan, whose time in space helped him see the world in a whole new way, argues that these apprehensions fail to take into account the big picture: We’re all in this together.
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NASA represents a full 50% of the world’s expenditures on space science & exploration. What should we expect from it? “This Administration has never really faced up to where we […]
If you see a picture of a planet, can you identify which of the eight it is? “Don’t go around saying the world owes you a living. The world owes […]
NASA’s Orion test flight is scheduled for this morning. The launch is a giant first step (you could say “a giant leap”) toward an eventual mission to Mars.
Would there be only blackness past the event horizon? Or something more? They say ‘A flat ocean is an ocean of trouble. And an ocean of waves… can also be […]
You won’t believe this view of the far side — and the Earth — until you see it. “When I look at the moon I do not see a hostile, empty world. I see […]
Our Milky Way is only the second-largest galaxy in our local group. Take an interactive dive into the biggest! “He who would search for pearls must dive below.” –John Dryden […]
Spoiler: NO, not a chance. Now find out why. “There is, I believe, in every disposition a tendency to some particular evil, a natural defect, which not even the best […]
It’s the only thing separating real knowledge from ignorant misinformation. “The first duty of every Starfleet officer is to the truth, whether it’s scientific truth or historical truth or personal […]
If they’re so massive that not even light can escape, how can we see them? “According to the special theory of relativity nothing can travel faster than light, so that […]
Either there’s an unseen source of mass, or the laws of gravity are wrong. But only one can explain what we see. “The discrepancy between what was expected and what […]
Incredible views from a single solar eclipse, thanks to an amazing photography mastermind. “Girls blush, sometimes, because they are alive, half wishing they were dead to save the shame. The […]
Last year was the hottest on record for every place in the world, except two: a small part of Antarctica and the Northeast United States.