
Stephanie Pappas
Stephanie Pappas is a contributing writer for Live Science, covering topics ranging from geoscience to archaeology to the human brain and behavior. She was previously a senior writer for Live Science but is now a freelancer based in Denver, Colorado, and regularly contributes to Scientific American and The Monitor, the monthly magazine of the American Psychological Association. Stephanie received a bachelor's degree in psychology from the University of South Carolina and a graduate certificate in science communication from the University of California, Santa Cruz.
Latest articles by Stephanie Pappas

Flare of light brighter than a trillion suns reveals location of rare double black hole galaxy
By Stephanie Pappas published
Brilliant new signals from a far-off galaxy confirm that the system is anchored by a pair of black holes locked in a daring dance.

Primordial steroids solve long-standing mystery about how the 1st complex life-forms evolved
By Stephanie Pappas published
Compounds from 1.6 billion years ago reveal a microbial transition that set the stage for much of today's life on Earth.

Siberia's 'gateway to the underworld' megaslump is revealing 650,000 year-old secrets from its permafrost
By Stephanie Pappas published
The permafrost inside the Batagay crater is the second-oldest ever found on Earth and scientists are using it to reconstruct the planet's ancient climate.

Repeated signals from the center of the Milky Way could be aliens saying hello, new study claims
By Stephanie Pappas published
A new search for extraterrestrial life has scientists looking inward — toward the center of our galaxy.

'Planet killer' asteroids pose no threat to Earth for at least 1,000 years — but smaller rocks could still be a problem
By Stephanie Pappas published
The risk of a kilometer-scale asteroid hitting Earth in the next millennium is really low. Phew.

A man's rare gene variant may have shielded him from devastating form of early Alzheimer's
By Stephanie Pappas published
The discovery of a gene variant that protects against an early, insidious form of Alzheimer's could lead to new treatments for the disease.

Rock that crashed through New Jersey home may be 4.6 billion-year-old chunk of Halley's Comet
By Stephanie Pappas last updated
An apparent meteorite crashed into a bedroom in Hopewell Township, New Jersey, on Monday (May 8). A scientific analysis confirmed its extraterrestrial origin.

Alien-like comb jellies have a nervous system like nothing ever seen before
By Stephanie Pappas published
Strange sea creatures called ctenophores have a fused nerve net where scientists expected to see synapses. Did they evolve their nervous system separately from other animals?

1st draft of a human 'pangenome' published, adding millions of 'building blocks' to the human reference genome
By Stephanie Pappas published
A new version of the human reference genome incorporates genetic data from 47 individuals from around the globe, deepening scientists' view into how genes work.

4 of Uranus' biggest moons have secret, underground oceans, new study suggests
By Stephanie Pappas published
A reanalysis of Voyager data suggests that four of Uranus moons may have oceans tucked between their cores and icy crusts.

'Leaking' cell phone towers could lead aliens straight to Earth, new study suggests
By Stephanie Pappas published
Advanced alien civilizations could probably already tell that there's intelligent life on Earth, thanks to our cell phone towers.

Giant phallus-shaped iceberg floating in Conception Bay surprises residents of Dildo, Canada
By Stephanie Pappas published
A phallus-shaped iceberg hovered off the coast of Dildo, Newfoundland in Conception Bay before collapsing.

Surges of activity in the dying human brain could hint at fleeting conscious experiences
By Stephanie Pappas published
An increase in a certain kind of high-frequency wave in dying brains might be associated with last-minute conscious experiences, but scientists don't know for sure.

China finally admits its hibernating Mars rover may never wake up
By Stephanie Pappas published
The Zhurong Mars rover never woke up from a planned hibernation, and the head of the mission team has now revealed why.

Scientists find weird holes on the ocean floor spewing ancient fluids 'like a fire hose'
By Stephanie Pappas published
Understanding the movement of fluids in the Cascadia subduction zone can help researchers pinpoint the risk of earthquakes

AI's 'unsettling' rollout is exposing its flaws. How concerned should we be?
By Stephanie Pappas published
AI isn't close to becoming sentient, but it could be disruptive anyway.

32 unusual poisonous animals
By Stephanie Pappas last updated
You do not want to eat these odd toxic creatures.

The surface of the ocean is now so hot it's broken every record since satellite measurements began
By Stephanie Pappas published
The upper levels of the ocean have never been this hot. Blame the end of La Niña and the ever-present heating effect of climate change.

'Green Monster' supernova is the youngest in the Milky Way, James Webb telescope reveals
By Stephanie Pappas published
New James Webb Space Telescope images reveal the grisly past of Cassiopeia A, the youngest known supernova remnant in the Milky Way.

Are aliens real?
By Stephanie Pappas published
Are aliens real? While there is no current evidence for extraterrestrial life anywhere in the universe, scientists are still optimistic.

Mathematicians make rare breakthrough on notoriously tricky 'Ramsey number' problem
By Stephanie Pappas published
The bounds on Ramsey numbers, which describe relationships between nodes in a network, have been narrowed.

Brightest gamma-ray burst ever detected defies explanation
By Stephanie Pappas published
Scientists are taking a closer look at the afterglow left by the brightest gamma-ray burst ever recorded, and what they see doesn't fit with any theoretical models.

13 of the biggest natural disasters in history
By Stephanie Pappas, Scott Dutfield last updated
Reference Earthquakes, hurricanes and volcanoes have taken countless lives and caused immeasurable damage throughout history.
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