This week’s image was captured in the morning sky over Alaska on April 15. It was later determined to be related to a SpaceX Falcon 9 launch the prior day in California. As The New York Times reported, the spiral was attributed to “…the reflection of the excess fuel it released into the atmosphere.”
Below is another image taken by a local resident. The Internet is full of them.
While the northern lights are impressive enough, the addition of the spiral is extra special.
This week’s image is from NASA’s Astronomy Picture of the Day (APOD). Here is the full story of the solar eclipse from the NASA site:
Along a narrow path that mostly avoided landfall, the shadow of the New Moon raced across planet Earth’s southern hemisphere on April 20 to create a rare annular-total or hybrid solar eclipse. From the Indian Ocean off the coast of western Australia, ship-borne eclipse chasers were able to witness 62 seconds of totality though while anchored near the centerline of the total eclipse track. This ship-borne image of the eclipse captures the active Sun’s magnificent outer atmosphere or solar corona streaming into space. A composite of 11 exposures ranging from 1/2000 to 1/2 second, it records an extended range of brightness to follow details of the corona not quite visible to the eye during the total eclipse phase. Of course eclipses tend to come in pairs. On May 5, the next Full Moon will just miss the dark inner part of Earth’s shadow in a penumbral lunar eclipse.
This week’s image is from the Hubble Space Telescope. You are looking at JO204, also called the “jellyfish galaxy” because of its tendrils. It is about 600 million light-years away. It is an impressive sight.
Here is a little more on the galaxy from NASA:
While the delicate ribbons of gas beneath JO204 may look like floating jellyfish tentacles, they are in fact the outcome of an intense astronomical process known as ram pressure stripping. Ram pressure is a particular type of pressure exerted on a body when it moves relative to a fluid. An intuitive example is the sensation of pressure you experience when you are standing in an intense gust of wind – the wind is a moving fluid, and your body feels pressure from it. An extension of this analogy is that your body will remain whole and coherent, but the more loosely bound things – like your hair and your clothes – will flap in the wind. The same is true for jellyfish galaxies. They experience ram pressure because of their movement against the intergalactic medium that fills the spaces between galaxies in a galaxy cluster. The galaxies experience intense pressure from that movement, and as a result their more loosely bound gas is stripped away. This gas is mostly the colder and denser gas in the galaxy – gas which, when stirred and compressed by the ram pressure, collapses and forms new stars in the jellyfish’s beautiful tendrils.
This week’s image is from today’s launch of the SpaceX Starship. The rocket experienced engine troubles and exploded about four minutes following the launch after reaching a height of 25 miles. The goal of this mission was to reach at least 90 miles.
SpaceX had this to say about the launch:
At 8:33 a.m. CT, Starship successfully lifted off from the orbital launch pad for the first time. The vehicle cleared the pad and beach as Starship climbed to an apogee of ~39 km over the Gulf of Mexico – the highest of any Starship to-date. The vehicle experienced multiple engines out during the flight test, lost altitude, and began to tumble. The flight termination system was commanded on both the booster and ship. As is standard procedure, the pad and surrounding area was cleared well in advance of the test, and we expect the road and beach near the pad to remain closed until tomorrow.
With a test like this, success comes from what we learn, and we learned a tremendous amount about the vehicle and ground systems today that will help us improve on future flights of Starship.
This week’s image is an illustration showing what scientists believe the NASA/ESA Hubble Space Telescope has detected, though it initially showed as only a smudge. The dramatic illustration tells a fascinating story, as described by NASA’s Hubblesite
There’s an invisible monster on the loose, barreling through intergalactic space so fast that if it were in our solar system, it could travel from Earth to the Moon in 14 minutes. This supermassive black hole, weighing as much as 20 million Suns, has left behind a never-before-seen 200,000-light-year-long “contrail” of newborn stars, twice the diameter of our Milky Way galaxy. It’s likely the result of a rare, bizarre game of galactic billiards among three massive black holes.
Our Awesome Universe 