A new study reevaluates the Kardashev Scale using a new framework that includes the Bitcoin network as a means of measuring the trajectory of human development.
Exoplanet hunters are keen to find the next extrasolar earthlike planet, one that may harbor life as we know it. But preliminary results from a new study indicate that our galaxy may be filled with a plethora of exo-Venuses. Yet as one exoplanetary researcher notes: the template for such exo-worlds --- our own Venus --- has been ‘criminally underexplored.’
Spacecraft often use planets for gravity-assist or "slingshot" maneuvers. NASA's Psyche mission used Mars for that purpose during a May 15th flyby. The flyby accelerated the spacecraft and aimed it at its eventual destination, the asteroid 16 Psyche. The flyby was also an opportunity to take some pictures of Mars, and to test and calibrate the spacecraft's science instruments.
Here’s an entire BBC concert by Joni Mitchell, filmed in September, 1970. I’ve always thought that BBC concerts were the best, as they will always live and without accompaniment. This one is 48 minutes long, and she had long career after this with some great albums (“Blue,” “For the Roses” and “Court and Spark”).
I have nothing to add to this music save to say that I think she’s the greatest combination of singer, songwriter, and instrumentalist of our time, and like most boys my age (I was 21), I was hopelessly in love with her. James Taylor, who also had a BBC concert that same year, rivals her on the male side for the trio of talents, but Joni has the overall edge.
Oh, and some of my favorite songs here are “Chelsea Morning” (at the start), “My Old Man” (16:47), “Woodstock” (25:10), “All I Want” (31:00, on the dulcimer), “All I Want” (31:45), “California” (36:45), and of course “Both Sides Now” (44:25)
Can you imagine being in the audience and hearing these songs for the first time?
The first comment is ineffably poignant:
@chaulahopefisher4064 I am at the end of my life, 68 years old and in hospice…dying with leukemia. I remember owning my first JONI MITCHELL album with clouds and Michael from mountains, Nathan la frenier, etc…. it changed my life and initiated my music career. I have lived lifetimes since then and changed careers several times. Now, resting on my couch, I listen to this old concert and remember how I felt when I was 13 years old and just hearing these songs for the very first time. at the time she was the older wiser woman whom I wanted to emulate…. now, watching this, she is dewy youth and I the rusk, ready to blow away on the wind with a song in my heartNew Mexico State University (NMSU) astronomy graduate student Khagendra Katuwal studied 70 coronal holes on the sun to better understand the connection between solar activity and space weather. His paper was recently published in The Astrophysical Journal.
In 2014, researchers presented the discovery of water vapour plumes being emitted from Jupiter's moon Europa. This caused quite a stir; it meant that the moon's buried ocean was accessible without contending with the thick ice shell that concealed it. But new research by the same researchers questions those detections.
Typically when we think of astronomy, we think of pictures of M87 captured on a backyard telescope or the soaring colorful peaks of the Eagle Nebula seen by Hubble. But perhaps the most influential type of astronomy of the last 100+ years doesn’t directly result in the stunning pictures we’re so accustomed to today. It captures radio waves from some of the most interesting objects in the universe. And in her new book, The Echoing Universe: How Radio Astronomy Helps Us See the Invisible, Dr. Emma Chapman, a radio astronomer at the University of Nottingham, tracks how these longest wavelengths of the electromagnetic spectrum have influenced the practice of astronomy and our understanding of our place in the universe.
Ingenuity, the Mars helicopter, which performed the first controlled, powered flight on another planet, was an excellent demonstration of human ingenuity. But it was just that - a demonstrator. The intention with Ingenuity was simply to prove that we could, in fact, fly on another planet. But now we’ve proved that we can, it’s time to do something more useful with that new ability - like do actual science. A new mission designed to do just that recently passed a critical testing milestone, opening the way for future Mars helicopter missions that will make Ingenuity look like our very first steps.
When people eventually head to the Moon for long-term exploration and habitation, they'll need equipment and habitats made of well-tested materials. That's where NASA's Lunar Environment Test Rig (LESTR) comes in handy. It simulates extreme cold lunar night conditions right here in a NASA Glenn lab, testing equipment in temperatures ranging from 40K to 125K (-233 C to -148 C) in a vacuum.
Galaxies grow through mergers and collisions, and astronomers want to know more about the mergers in the Milky Way's past. But mergers can stir up the stars in the resulting galaxy, making it difficult to determine exactly when an ancient merger occurred. A new study led by researchers at the Institute of Cosmos Sciences of the University of Barcelona (ICCUB) and the Institute of Space Studies of Catalonia (IEEC) may have overcome that challenge.