The European Southern Observatory’s Very Large Telescope (VLT) has a high-resolution spectrograph called ESPRESSO, designed specifically to detecting and characterize exoplanets. Astronomers recently ran a test with the instrument, studying the atmosphere and winds of Jupiter. They used a technique called Doppler velocimetry to measure the reflection of light from the Sun in the planet’s clouds, allowing for instantaneous measurement of the clouds’ wind speeds. The technique has also been used on Venus and will guide the future study of exoplanets.
Continue reading “Astronomers Test an Exoplanet Instrument on Jupiter”Watch a Full Martian Day, From Dawn to Dusk
On November 8th, NASA’s Curiosity Rover paused its incessant science work and just watched the day unfold on Mars. The rover used its black-and-white Hazard-Avoidance Cameras (Hazcams) to watch an entire 12-hour day on Mars as the shifting Sun cast shadows across the Martian landscape. NASA chose this day because of the Mars solar conjunction when the Sun interferes with communications with the Red Planet, meaning the rover doesn’t do any roving about. The timelapse comprises 25 frames from both the front and rear Hazcams.
Continue reading “Watch a Full Martian Day, From Dawn to Dusk”Questions Remain on Chinese Rocket That Created an Unusual Double Crater on the Moon
In November, we reported how an impact on the Moon from a Chinese Long March rocket booster created an unusual double crater. For a single booster to create a double crater, some researchers thought there must have been an additional – perhaps secret – payload on the forward end of the booster, opposite from the rocket engines. But that may not necessarily be the case.
Other researchers feel the extra mass wasn’t anything secretive, but possibly an inert structure such as a payload adapter added to the rocket to support the primary mission payload.
Continue reading “Questions Remain on Chinese Rocket That Created an Unusual Double Crater on the Moon”It’s Time for Saturn’s “Spokes” to Return
Astronomers have been observing Saturn with the Hubble Space Telescope and several other spacecraft for decades and have noticed something unusual. During seasonal changes, transient spoke-like features appear in the rings. These dark, ghostly blobs orbit around the planet 2-3 times, and then disappear.
As Saturn is approaching its equinox, this is prime spoke activity time. Once again, Hubble has been called to gaze at Saturn, tracking the behavior of the spokes and hopefully giving astronomers more clues as to why they occur.
Continue reading “It’s Time for Saturn’s “Spokes” to Return”Finally. A Productive Use for Nuclear Weapons: Asteroid Defense
While it has been a favorite disaster movie theme, nuking an incoming asteroid in the real world has been touted as a very bad idea. While a nuclear bomb could possibly obliterate a smaller asteroid, nuking a larger asteroid would only break it into pieces. Those pieces would still threaten our planet, and perhaps even makes things worse by producing multiple impacts across the planet.
But is using nuclear weapons on an incoming asteroid really a bad idea? If the right technique is used, a nuclear blast could possibly be used as an asteroid deflection device.
Continue reading “Finally. A Productive Use for Nuclear Weapons: Asteroid Defense”Enjoy the Holiday-Themed Christmas Tree Cluster
Just in time for the holidays, a new composite image of the Christmas Tree Cluster (NGC 2264) has been released. This image is a group effort: the blue and white stars in the cluster giving off X-rays are seen by Chandra, while the faint green nebula was imaged by the WIYN 0.9-meter telescope on Kitt Peak.
Continue reading “Enjoy the Holiday-Themed Christmas Tree Cluster”Blue Origin’s New Shepard Completes 24th Flight; New Glenn Hopefully on the Horizon
Blue Origin’s New Shepard rocket successfully launched and landed today at the company’s Launch Site One in West Texas, with an uncrewed science and goodwill payload onboard. This was the 24th New Shepard flight and 13th payload mission today from Launch Site One in West Texas.
This marked the first flight since September of 2022 when the uncrewed NS-23’s booster suffered an in-flight anomaly; however, the escape system jettisoned the capsule, which was able to land safely. With the success of NS-24, Blue Origin hopes to soon restart its commercial passenger flights.
Continue reading “Blue Origin’s New Shepard Completes 24th Flight; New Glenn Hopefully on the Horizon”Hubble Sees a Random Collection of Galaxies, Perfectly Lined Up
This new image from the Hubble Space Telescope looks like a series of smaller spiral galaxies are falling out of a larger and brighter galaxy. That’s just one of the many reasons this collection of galaxies belongs to the Arp-Madore catalogue of peculiar galaxies.
Continue reading “Hubble Sees a Random Collection of Galaxies, Perfectly Lined Up”Cool New Mission Trailer for Rosalind Franklin Rover
ESA’s Rosalind Franklin Mars rover has been delayed twice due to problems with its parachute deployment and Russia’s invasion of Ukraine. After ESA formally terminated the mission’s cooperation with Roscosmos in July 2022, Europe found a new partner with NASA and the mission appears to be on track for a 2028 launch.
The agency recently shared a new animated mission trailer showing new details about the rover, including how it will drill two meters into the Martian regolith and examine the samples with its onboard laboratory.
Continue reading “Cool New Mission Trailer for Rosalind Franklin Rover”Review: Unistellar’s eQuinox 2 Telescope and New Smart Solar Filter
I recently had the chance to try out one of Unistellar’s smart telescopes, the eQuinox 2. Unparalleled in its ease of use, I was literally viewing distant nebula, galaxies, and star clusters within 15 minutes of opening the box.
I also had the opportunity to try out Unistellar’s new Smart Solar Filter, which I’ll discuss more below. But first, more about the telescope itself:
Continue reading “Review: Unistellar’s eQuinox 2 Telescope and New Smart Solar Filter”