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space

SPACE: Was There Life on the Moon?

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moon - NASA

Did life ever exist on the moon? Maybe! Have scientists found evidence of life on the moon? Definitely not. Why are we talking about this? A new paper was published online today (July 23) in the journal Astrobiology with a thrilling headline: “Was There An Early Habitability Window for Earth’s Moon?” Its associated press release had an even more exciting title: “Researcher sees possibility of moon life.” Wowza! This is genuinely cool stuff. But it’s important to understand what it’s really saying and what it’s not. The paper, written by a pair of astrobiologists from Birkbeck College in London and the Technical University of … Read more

SPACE: NASA May Have Discovered Evidence of Life On Mars. Then They Set It On Fire.

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Mars - Pixabay

In the late 1970s, two Viking robots sailed to Mars, pillaged the soil and burnt any traces of life they found. That was never the plan, of course. When NASA first landed the twin spacecraft named Viking 1 and Viking 2 on the surface of Mars 40 years ago, scientists were ecstatic to finally start studying Martian soil for signs of organic (carbon-based) molecules that could prove the Red Planet was hospitable for life. It should’ve been a slam-dunk mission. The pockmarked face of Mars was constantly being pelted with tiny, carbon-rich meteorites, after all — detecting signs of that … Read more

SPACE: Crossing the Milkyway

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Milky Way

The disk of our home galaxy – the Milky Way – is bigger than we previously thought. A new study shows it would take 200,000 years for a spaceship traveling at the speed of light to go across the entire galaxy. Researchers made the find after analyzing the abundances of metals (heavy elements) in stars, also known as their metallicities. When looking beyond the previously assumed boundary of the Milky Way’s disk, scientists were surprised to see stars with compositions resembling those of disk stars. “We have shown that there is an appreciable fraction of stars with higher metallicity, characteristic … Read more

SPACE: Is Space Greasy?

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greasy space - pixabay

Space: It’s dark, cold and, in most parts of the galaxy, probably pretty sticky. Swirled amid the dust, soot and electromagnetic radiation that sits among the stars of the Milky Way, there is also a whole mess of toxic grease. This “space grease” — actually an oily form of hydrogen-bound carbon called aliphatic carbon — is one of several types of carbon leaked into empty space by blazing stars, and may be among the key ingredients in the formation of new stars and planets, astronomers say. Precisely how much grease is out there lubing up the Milky Way? Scientists haven’t … Read more

SCIENCE: Surgery in Space Will Be Messy – Live Science

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surgery - pixabay

There’s already enough to worry about when planning a one-way trip to Mars. Did you pack enough sunblock to deflect the deadly cosmic radiation? Will there be enough water there? What if your assigned procreation partner doesn’t like you? Now, scientists writing in the British Journal of Surgery have provided one more thing to fear: floating blobs of infectious bodily fluids. According to the authors of a new paper published last week (June 19), runaway blood, urine and fecal matter are just some of myriad possible complications of space surgery that likely await future astronauts. In a review of studies … Read more

SPACE: Signs of Life

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Enceladus - NASA

Enceladus – NASA When it comes to looking for alien life, scientists mostly focus on where there is water. Now researchers suggest that looking at “bioessential” elements such as phosphorus and molybdenum could help judge a world’s potential for life. There is life virtually wherever there is water on Earth, from clouds high above the surface to the deepest layer of Earth’s crust. As such, the search for life outside Earth typically concentrates on worlds that are “habitable,” possessing temperatures conducive to hosting liquid water on its surface. For example, although the surface of Venus is currently hot enough to … Read more

SPACE: NASA’s New Plan to Destroy Deadly Asteroids – Live Science

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asteroid strike - pixabay

NASA has updated its plans to deflect potentially hazardous Earth-bound asteroids — and none of them involve Bruce Willis. The White House Office of Science and Technology Policy released a new report today (June 20) titled the “National Near-Earth Object Preparedness Strategy and Action Plan.” The 18-page document outlines the steps that NASA and the Federal Emergency Management Agency (FEMA) will take over the next 10 years to both prevent dangerous asteroids from striking Earth and prepare the country for the potential consequences of such an event. Officials with NASA, FEMA and the White House discussed the new asteroid-mitigation strategies … Read more

SPACE: Are Black Holes Actually Colliding Wormholes?

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black hole - pixabay

When two wormholes collide, they could produce ripples in space-time that ricochet off themselves. Future instruments could detect these gravitational “echoes,” providing evidence that these hypothetical tunnels through space-time actually exist, a new paper suggests. The Laser Interferometer Gravitational-Wave Observatory (LIGO) has already detected space-time ripples, called gravitational waves, emanating from merging black holes — discoveries that led to the Nobel Prize in 2017. But while LIGO’s detection was just one of many observations supporting the existence of black holes, these exotic objects still pose theoretical problems. For instance, they seem to be inconsistent with the laws of quantum mechanics. … Read more

SPACE: The Science of Reproducing on Mars

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Mars - pixabay

In 1972, citizen scientist Sir Elton John hypothesized that Mars “ain’t the kind of place to raise your kids.” While John’s remarks were never published in a peer-reviewed journal (though they did peak at No. 2 on the UK Singles Chart), he’s not wrong about the Red Planet’s inhospitality. With its freezing climate, thin atmosphere and weak gravity, Mars will be a hard place to raise the children necessary to sustain a permanent colony there. And according to a new paper published in the June issue of the journal Futures, conceiving kids on Mars will be even harder. Thinking about … Read more

SPACE: Don’t Snort the Moon Dust

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Moon Dust - NASA

In space, they say, no one can hear you sneeze. But Apollo 17 astronaut Harrison Schmitt was doing a lot of that inside the Challenger command module when he visited the moon in 1972. One day, after a lunar walk, Schmitt accidentally breathed in some of the abundant moon dust that he and his commander had tracked back in to the Challenger living quarters. For a full day, Schmitt suffered from what he described as “lunar hay fever.” His eyes watered, his throat throbbed, and he broke into a sneezing fit. No, Schmitt wasn’t allergic to the moon. NASA scientists … Read more