Behold, the closest-ever photo of a coronal streamer
It was captured by the Parker Solar Probe, which is currently studying the star.
- NASA's Parker Solar Probe is currently traveling closer to the sun than any other spacecraft before it.
- The probe is recording data on the star to help scientists learn more about the star and its volatile nature.
- Also this week, NASA released the first images of its Mars InSight lander taken from space.
NASA's Parker Solar Probe has come closer to the sun than any human spacecraft before it, managing to enter the star's atmosphere to record data for the ambitious mission.
On November 8, the probe soared within about 15 million miles of the sun's surface. To illustrate how close that is, NASA researchers wrote: "If Earth was at one end of a yard-stick and the Sun on the other, Parker Solar Probe will make it to within four inches of the solar surface."
During the encounter, the probe's wide-field imager snapped the closest-ever photo of the sun emitting solar material, in an event known as a coronal streamer.
These events usually occur over regions undergoing increased solar activity, and this one appeared over the east limb of the sun and includes at least two visible rays. Jupiter, the bright spot toward the center of the photo, is also visible in the background.
The photo was shared at a meeting of the American Geophysical Union earlier this week.
"Heliophysicists have been waiting more than 60 years for a mission like this to be possible," said Nicola Fox, director of the Heliophysics Division at NASA Headquarters in Washington. Heliophysics is the study of the Sun and how it affects space near Earth, around other worlds and throughout the solar system. "The solar mysteries we want to solve are waiting in the corona."
What the Parker probe mission hopes to accomplish
The Parker Solar Probe is on an exploratory mission that could yield surprising findings for scientists, namely because no one's quite sure what exactly happens when a spacecraft gets so close to the sun. NASA hopes the mission will address three key questions:
"First: How is the sun's outer atmosphere, the corona, heated to temperatures about 300 times higher than the visible surface below?" NASA wrote in a blog post. "Second — how is the solar wind accelerated so quickly to the high speeds we observe? And finally, how do some of the sun's most energetic particles rocket away from the sun at more than half the speed of light?"
To answer these questions, the Parker probe must match the speed of the sun's rotation so it can hover over areas of interest, meaning it must fly faster than 213,000 miles per hour. Learning more about the star is important, given its tremendous influence on our planet and those in our solar system. NASA writes:
"The solar wind, its outflow of material, fills up the inner part of our solar system, creating a bubble that envelops the planets and extends far past the orbit of Neptune. Embedded in its energized particles and solar material, the solar wind carries with it the Sun's magnetic field. Additional one-off eruptions of solar material called coronal mass ejections also carry this solar magnetic field — and in both cases, this magnetized material can interact with Earth's natural magnetic field and cause geomagnetic storms. Such storms can trigger the aurora or even power outages, and other types of solar activity can cause communications problems, disrupt satellite electronics and even endanger astronauts — especially beyond the protective bubble of Earth's magnetic field."
NASA also releases first images of Mars InSight lander taken from space
This week, NASA published the first images taken of its Mars InSight lander, which touched down on the red planet in November and is designed to help scientists learn more about the formation of rocky planets. The images were taken from HiRISE, a camera onboard NASA's Mars Reconnaissance Orbiter (MRO).
To create wiser adults, add empathy to the school curriculum.
- Stories are at the heart of learning, writes Cleary Vaughan-Lee, Executive Director for the Global Oneness Project. They have always challenged us to think beyond ourselves, expanding our experience and revealing deep truths.
- Vaughan-Lee explains 6 ways that storytelling can foster empathy and deliver powerful learning experiences.
- Global Oneness Project is a free library of stories—containing short documentaries, photo essays, and essays—that each contain a companion lesson plan and learning activities for students so they can expand their experience of the world.
Philosophers like to present their works as if everything before it was wrong. Sometimes, they even say they have ended the need for more philosophy. So, what happens when somebody realizes they were mistaken?
Sometimes philosophers are wrong and admitting that you could be wrong is a big part of being a real philosopher. While most philosophers make minor adjustments to their arguments to correct for mistakes, others make large shifts in their thinking. Here, we have four philosophers who went back on what they said earlier in often radical ways.
Just before I turned 60, I discovered that sharing my story by drawing could be an effective way to both alleviate my symptoms and combat that stigma.
I've lived much of my life with anxiety and depression, including the negative feelings – shame and self-doubt – that seduced me into believing the stigma around mental illness: that people knew I wasn't good enough; that they would avoid me because I was different or unstable; and that I had to find a way to make them like me.
A joint study by two England universities explores the link between sex and cognitive function with some surprising differences in male and female outcomes in old age.
- A joint study by the universities of Coventry and Oxford in England has linked sexual activity with higher cognitive abilities in older age.
- The results of this study suggest there are significant associations between sexual activity and number sequencing/word recall in men. In women, however, there was a significant association between sexual activity in word recall alone - number sequencing was not impacted.
- The differences in testosterone (the male sex hormone) and oxytocin (a predominantly female hormone) may factor into why the male cognitive level changes much more during sexual activity in older age.
Mathematicians studied 100 billion tweets to help computer algorithms better understand our colloquial digital communication.