Universe Today

August 12, 2023August 12, 2023 by Andy Tomaswick

Cylindrical Autonomous Drilling Bot Could Reach Buried Martian Water

The south pole of Mars is a likely candidate for future exploration efforts there. It is also an area of interest for astrobiologists, as there is a decent chance that there might be signs of ancient water there and, therefore, signs of ancient life – if there was any on the Red Planet anyway. But to access that ancient life, explorers would have to get to it, which means digging much further than has ever been dug on Mars before. Typical deep-bore drilling equipment is bulky, heavy, and difficult to set up on remote terrain like the Martian South Pole. So a group of engineers from Planet Enterprises, a Space Technology Incubator based in Washington, developed a new deep bore drilling concept they call Borebots.

August 12, 2023August 12, 2023 by Brian Koberlein

Giant Tidal Waves are Crashing Onto the Surface of an Enormous Star

Illustration of waves breaking on a heartbeat star. Credit: Melissa Weiss, CfA

Binary star systems often appear as variable stars. When we can’t see the individual stars because they are either too close together or too far away, we can see the gradual brightening and dimming of a single point of light as the stars orbit each other. Sometimes if the stars are particularly close when they pass each other they can brighten in unusual ways. One example of this is known as a heartbeat star.

August 12, 2023August 12, 2023 by Matt Williams

Astronomers Find a Newly-Forming Quadruple-Star System

This artist’s impression shows the orbits of the objects in the HR 6819 triple system. Credit: ESO/L. Calçada

In a surprising find, the international ALMA Survey of Orion Planck Galactic Cold Clumps (ALMASOP) team recently observed a young quadruple star system within a star-forming region in the Orion constellation. The discovery was made during a high-resolution survey of 72 dense cores in the Orion Giant Molecular Clouds (GMCs) using the Atacama Large Millimeter/submillimeter Array (ALMA) in Chile. These observations provide a compelling explanation for the origins and formation mechanisms of binary and multiple-star systems.

August 11, 2023August 11, 2023 by Andy Tomaswick

Deploying a Huge Antenna On The Moon Could Study Its Insides

Understanding what lies under the lunar surface could be critical to future exploration efforts. A series of missions have already mapped some parts of the sub-surface of the Moon. Still, few have delved deep inside, where large lava caverns or potentially valuable water or mineral deposits may lie. But that might be about to change. NASA’s Institute for Advanced Concepts (NIAC) supplied funding to a novel technology developed by a team at its Jet Propulsion Laboratory (JPL) that could solve the long-standing problem of seeing what lies within the Moon.

August 11, 2023August 11, 2023 by Matt Williams

Juno Shares Stunning New Images of Jupiter’s Volcanic Moon Io

Io, in all of its volcanic glory! Credit: NASA/JPL-Caltech/SwRI/MSSS/Thomas Thomopoulos ©

The Galilean Moons, named in honor of Galileo Galileo, who first observed them in 1610, are a fascinating collection of satellites. For decades, scientists have been immensely fascinated by the three icy companions – Europa, Ganymede, and Callisto – which have oceans in their interiors that possibly support life. But Io has also been a focal point of interest lately, owing to the volcanic activity on its surface and lava plumes reaching 300 to 500 km (186 to 310 mi) into space. Since 2016, NASA’s Juno probe has provided stunning images of Io as it continues to orbit its main science objective, Jupiter.

The latest was acquired by the Juno probe’s main camera (JunoCam) on July 31st, 2023, at 05:03 AM UTC (01:03 AM EDT; July 30th, 10:03 PM PDT) and showed Prometheus spewing out lava. This active volcano is located within a 28-km (17-mi) -wide volcanic pit named Prometheus Patera on the hemisphere facing away from Jupiter. Prometheus is known for its regular eruptions, hence its nickname in the astrogeological community, “Old Faithful of Io.” A processed image of the eruption was shared by the NASA Planetary Science Division via Twitter (see below).

August 11, 2023August 11, 2023 by Carolyn Collins Petersen

Researchers Match Up 12 Meteorites with the Near-Earth Asteroids They Came From

NASA's "Eyes on Asteroids" site maps the known Near-Earth asteroids (NEAs) and shows the population of these objects. Some are parent bodies of meteorites found on Earth. Courtesy NASA.

Every day meteoroids blast through our planet’s atmosphere to hit the ground as meteorites. A team of researchers in Italy traced twelve of them to progenitor asteroids that orbit in near-Earth space.

August 11, 2023August 11, 2023 by Brian Koberlein

Evidence for Modified Gravity Found in the Motions of Binary Stars

Artistic repesentation of a binary star system. Credit: NASA/JPL-Caltech

With our continued failure to discover dark matter particles, it’s worth considering alternatives. While dark matter is the most widely supported model, the alternatives fall into two broad paths. One is that we should look to extended models of general relativity, such as conformal gravity. The other argues we should modify the very nature of Newtonian dynamics. The first approach tends to be popular with theorists since it focuses on an abstract theory in the same vein as Einstein’s original ideas. The second, often known as Modified Newtonian Dynamics, or MoND, tends to be more popular with observational astronomers.

August 10, 2023August 10, 2023 by Carolyn Collins Petersen

JWST Turns its Gaze on the Farthest Known Star: Earendel

The massive galaxy cluster called WHL0137-08, which is gravitational lensing the most strongly magnified galaxy known in the Universe’s first billion years: the Sunrise Arc, and within that galaxy, the most distant star ever detected. The star is , nicknamed Earendel. NASA, ESA, CSA, D. Coe (AURA/STScI for ESA), Z. Levay

In March 2022, astronomers announced the discovery of the farthest known star via an image taken by the Hubble Space Telescope. They named it Earendel, after the old English name for “morning star”. Now, JWST’s Near-infrared Camera (NIRCam) and its NIRSpec spectrometer have taken a look at the same star and revealed more details about it.

August 10, 2023August 10, 2023 by Andy Tomaswick

We Could Get Material On The Moon By Shocking It With Lightning

Lately, plenty of ideas have been floating around for methods to mine the Moon. That is undoubtedly partly due to the growing enthusiasm for Artemis, NASA’s lunar exploration program, and its planned support for a long-term human presence on the Moon. But what would make the best technique to get valuable material off the lunar surface? How about zapping it with lightning? That is the idea behind a NASA Institute for Advanced Concepts grant given to Dr. Amelia Grieg of the University of Texas at El Paso. And it seems to work.

August 10, 2023August 10, 2023 by Alan Boyle

Virgin Galactic Flies Its First Privately Funded Space Tourists

Virgin Galactic VSS Eve lights up rocket motor — Virgin Galactic's VSS Eve lights up its rocket motor for the climb to the edge of space. (Virgin Galactic Photo)

Virgin Galactic sent its first privately funded adventurers — and its first space sweepstakes winners — past the 50-mile space boundary today.

The tourists on the suborbital space trip known as Galactic 02 included Keisha Schahaff, who won two tickets in an online contest organized by the Omaze charity sweepstakes platform and a nonprofit group called Space for Humanity in 2021. She and her daughter, Anastatia Mayers, became the first mother-and-daughter duo to share a spaceflight, and the first spacefliers from the Caribbean island nation of Antigua and Barbuda.

“I kind of feel like I was born in this life for this,” Schahaff, a wellness coach, told NBC’s “Today” show. Her daughter is a college student who aims to become an astrobiologist.

Jon Goodwin — an 80-year-old British adventurer who competed as a canoeist in the 1972 Olympics — also broke barriers on today’s Galactic 02 flight. In 2005, he was one of the first customers to reserve a spot with Virgin Galactic, back when the price was $200,000. Then, almost a decade ago, he was diagnosed with Parkinson’s disease. Today he became only the second person with Parkinson’s to take a space trip. (The first was NASA shuttle astronaut Rich Clifford.)