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Health News
Woman's selfies capture moving lump on face: a parasite
In selfies, a woman documented a lump under her skin for weeks before doctors were able to remove it -- and it didn't stay in one place, according to a case report in the New England Journal of Medicine.

Here's when most kids start social media


How to be an ally to your LGBT friends, relatives and co-workers
Pride Month offers numerous events where members of the LGBT community can celebrate who they are.

ICE detainee held in California prison diagnosed with chickenpox


Four reasons to skip an activated charcoal 'detox'


Hospital drugs policy killed 456 patients. Now families want justice


Herpes virus may play role in Alzheimer's, study says
Doctors don't know what causes Alzheimer's or how to treat it best, but they have new evidence to suggest that a common virus may play a role in who gets it. The study, out Thursday, is running in the journal Neuron. It suggests the human herpes virus, 6A and 7 to be specific, may have a role in the disease that robs people of their memory and cognitive functions.

His son's battle with cancer inspired his epic run


Koko, the gorilla who mastered sign language, has died
Koko, the gorilla who mastered sign language and showed the world what great apes can do, has died.

Pediatrician: Separated children 'trying to find ... anyone to hold on to'
A pediatrician in Colorado examines young children newly separated from their parents and shares her observations with CNN. She says that while their physical condition was fine, emotionally "they were the opposite of stable."

Laser pointer burns hole in boy's retina
A 9-year-old boy in Greece permanently injured his left eye when he repeatedly gazed into a laser pointer's green beam, doctors say.

While Americans focus on nuclear war, a larger threat looms
With all eyes on the United States and North Korea, experts warn that biological warfare could be more catastrophic than a nuclear attack.

Dr. Gupta: After all my years of reporting, this still haunts me
Most of the time when you hear me talking about food, I am talking about the food we eat. But a few years ago, I realized I needed to talk more about the food we DON'T eat.

Sunscreen 101: Your guide to summer sun protection and sunburn care


Weapons reveal how this 5,300-year-old ice mummy lived -- and died
Although he's older than the Giza pyramids and Stonehenge, the 5,300-year-old mummy of Otzi the Tyrolean Iceman continues to teach us things.

India sees sharp fall in heat wave deaths


WHO will stop classifying transgender people as mentally ill
The World Health Organization no longer classifies transgender people as mentally ill.

The war against childhood cancer: Who's winning?
Every day, the terrifying reality of a cancer diagnosis changes a child's life. But as technology and treatments improve, many more children could be able to call themselves survivors.

Woman kills parents, takes her own life over eczema torment
A former nursing student murdered her parents before killing herself on Father's Day, according to Hong Kong police, who suggested her skin condition may have motivated the attack.

What drinking alcohol means for your cancer and death risk
The science is clear: Drinking too much alcohol is bad for your health, but exactly how low-risk is light drinking?

Test your poison ivy knowledge before the plant ruins your summer
It was a close encounter in 2012 that made microbiologist John Jelesko take an interest in poison ivy.

'Incredibles 2': Theaters post warnings due to seizure concerns
Warning signs have been posted in theaters across the United States for fans with photosensitive epilepsy. The animated movie contains scenes of flashing lights.

Millennials may be less happy and healthy than their parents by middle age


These patients are forced to choose between deafness and death
The terror crept over Khumbulani Shandu.

WHO to classify 'gaming disorder' as mental health condition
Watching as a video game ensnares their child, many a parent has grumbled about "digital heroin," likening the flashing images to one of the world's most addictive substances.

FBI official, dead of 9/11-related cancer, remembered as number of cases grows
Hundreds of FBI officials in dark suits bowed their heads in a Virginia chapel Friday as a pastor offered a prayer to God: "Your son gave his life so that we may live."

Why the old way of parenting no longer works
Every couple of years a book or article arrives diagnosing parents with catastrophic spinelessness. The power pyramid has been inverted, they warn, and the children are in, and therefore out of, control.

India facing its worst water shortage in history, report says
India is facing its worst water shortage in history. Six hundred million people are dealing with high to extreme water shortage, according to a report by Niti Aayog, a policy think tank for the Indian government.

He gave birth. He breastfed. Now, he wants his son to see him as a man
Like many new dads, Sabastion Sparks knew parenting would come with serious challenges.
Astronomy News

12.18.2007

Dec. 18, 2007: A powerful jet from a supermassive black hole is blasting a nearby galaxy, according to new data from NASA observatories. This never-before witnessed galactic violence may have a profound effect on planets in the jet's path and trigger a burst of star birth in its destructive wake.

This real-life scene, worthy of the most outlandish science fiction, is playing out in a faraway binary galaxy system known as 3C321. Two galaxies are in orbit around one another. A supermassive black hole at the core of the system's larger galaxy is spewing a jet in the direction of its smaller companion.

see caption

Above: A composite image of 3C321. Scroll down the page to see an artist's illustration labeling the galaxies and the jet.

"We've seen many jets produced by black holes, but this is the first time we've seen one punch into another galaxy," says Dan Evans, a scientist at the Harvard-Smithsonian Center for Astrophysics and leader of the study. "This jet could be causing all sorts of problems for the smaller galaxy it is pummeling."

Jets from super massive black holes produce large amounts of radiation, especially high-energy X-rays and gamma-rays, which can be lethal in large quantities. The combined effects of this radiation and particles traveling at almost the speed of light could severely damage the atmospheres of planets lying in the path of the jet. For example, protective layers of ozone in the upper atmosphere of planets could be destroyed.

see caption

Above: An artist's illustration of 3C321 with galaxies and jets labeled.

The effect of the jet on the companion galaxy is likely to be substantial, because the galaxies in 3C321 are extremely close at a distance of only about 20,000 light years apart. They lie approximately the same distance as Earth is from the center of the Milky Way galaxy.

The jet and galactic assault were discovered through the combined efforts of both space and ground-based telescopes. NASA's Chandra X-ray Observatory, Hubble Space Telescope, and Spitzer Space Telescope were part of the effort. Two sophisticated radio telescopes--the Very Large Array (VLA) in Socorro, New Mexico, and the Multi-Element Radio Linked Interferometer Network (MERLIN) in the United Kingdom--were also needed for the finding.

A bright spot in the VLA and MERLIN images shows where the jet has struck the side of the galaxy, dissipating some of the jet's energy. The collision disrupted and deflected the jet.

A unique aspect of the discovery in 3C321 is how relatively short-lived this event is on a cosmic time scale. Features seen in the VLA and Chandra images indicate that the jet began impacting the galaxy about one million years ago, a small fraction of the system's lifetime.

It's possible that the event is not all bad news for the beleaguered galaxy. The massive influx of energy and radiation from the jet could spark the formation of large numbers of stars and planets after its initial wake of destruction is complete. In the distant future, say researchers, whole new star systems may have the lethal jet to thank for their very existance.

Outlandish, indeed.

Credit: Science@NASA

Mars Dust Storm Now 'Planet-Encircling,' Dimming Hopes For NASA Rover
As the dust storm grows and the solar-paneled Opportunity remains asleep, the younger Curiosity rover has been able to power through.

Giant Dust Storm On Mars Threatening To End NASA's Opportunity Rover
The rover has shut itself down because the solar panels aren't getting enough sunlight to charge the batteries. If the storm persists, the rover mission may be over, ending a 14-year run.

Enormous Dust Storm On Mars Threatens The Opportunity Rover
With the sun entirely blocked out by dust, the solar-powered rover has presumably fallen asleep to wait out the storm. NASA scientists say they are "very concerned," but that they hope for the best.

NASA's Curiosity Rover Finds Chemical Building Blocks For Life On Mars
Scientists can't say whether there is, or ever was, life on the Red Planet. But two Martian rock samples contained organic molecules — which contain carbon, the chemical element central to life.

Space Station For Sale: NASA Administrator Is In Talks With International Companies
NASA's Jim Bridenstine says he is interested in private corporations taking over management of the International Space Station consortium.

Alan Bean, Apollo 12 Astronaut Who Walked On The Moon, Dies At 86
Bean was the lunar module pilot of Apollo 12, which made the second moon landing, in 1969. Later in life, as a painter, he chronicled the people and experience of the Apollo program.

NASA Launching New Satellites To Measure Earth's Lumpy Gravity
The two satellites, which are collectively called GRACE and will replace two retired probes, are one of the most important tools for understanding the effects of climate change.

Trump Hints At Plan To Create 'Space Force' As Sixth Military Branch
While the Pentagon opposes the measure, the military has conducted operations in space for 50 years.

Asteroid Will Pass Between The Earth And The Moon Tuesday (Don't Panic)
First spotted in 2010, a space rock is zooming toward Earth, making a close pass on Tuesday that will see it fly safely by — about halfway between our planet and the moon.

Icy Moon Of Jupiter Spews Water Plumes Into Space
Researchers have evidence supporting the existence of plumes of water shooting up from the interior of Jupiter's icy moon Europa.

Earth's 'Bigger, Older Cousin' Maybe Doesn't Even Exist
In 2015, to great fanfare, NASA announced a planet discovery considered a milestone in the hunt for another Earth. But now some researchers say it's not clear that this planet actually exists.

NASA Launches New Mars Mission
NASA is launching a probe to explore the center of Mars. NPR's Lulu Garcia-Navarro talks with Oliver Morton, author of Mapping Mars, about what scientists hope to learn.

NASA InSight Kicks Off 6-Month Journey To Mars
The InSight Mars lander was successfully launched on Saturday morning, by an Atlas V rocket taking off from Vandenberg Air Force Base in California. It will gather data on Mars' interior.

NASA Is Heading Back To Mars To Peer Inside The Red Planet
The NASA mission is set to launch Saturday morning. The InSight spacecraft will land in the Elysium Planitia to listen for "Marsquakes" and learn more about what Mars is made of.

NASA Tests New Nuclear Reactor For Future Space Travelers
The reactor could keep the lights on during long-duration missions far from Earth.

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