Universe Today

August 8, 2022August 8, 2022 by Nancy Atkinson

Hubble can Still Impress and Inspire. Here's Globular Star Cluster NGC 6638

Globular cluster NGC 6638 in the constellation Sagittarius, as seen by the Hubble Space Telescope. Credit: ESA/Hubble & NASA, R. Cohen.

Wow, what a beauty! While we’ve all turned our attentions to the new James Webb Space Telescope, this image proves Hubble has still has got it where it counts.

This new image from the Hubble Space Telescope shows the heart of the globular cluster NGC 6638 in the constellation Sagittarius. This star-studded cluster contains tens of thousands to millions of stars, all tightly bound together by gravity. Globular clusters have a higher concentration of stars towards their centers, and this observation highlights that density.

August 7, 2022August 8, 2022 by Laurence Tognetti

Will Europa finally answer, ‘Are we alone?’

While NASA’s much-lauded Space Launch System stands ready for its maiden flight later this month with the goal of sending astronauts back to the Moon in the next few years, our gazes once again turn to the stars as we continue to ask the question that has plagued humankind since time immemorial: Are we alone? While there are several solar system locales that we can choose from to conduct our search for life beyond Earth, to include Mars and Saturn’s moons, Titan and Enceladus, one planetary body orbiting the largest planet in the solar system has peaked the interest of scientists since the 1970s.

August 7, 2022August 7, 2022 by Nancy Atkinson

Watch OSIRIS-REx's Complex Orbital Path Around Bennu in This Cool Animation

OSIRIS-REx mission timeline. Credit: NASA.

The OSIRIS-REx spacecraft conducted a two-year reconnaissance and sample collection at the asteroid Bennu, providing crucial data about the 500-meter-wide potentially hazardous rubble pile/space rock. When OSIRIS-REx arrived on Dec. 3, 2018, it needed some tricky navigation and precise maneuvers to make the mission work.

Experts at NASA Goddard’s Scientific Visualization Studio created an amazing visualization of the path the spacecraft took during its investigations. A short film called “A Web Around Asteroid Bennu” highlights the complexity of the mission, and the film is being shown at the SIGGRAPH computer graphics conference in Vancouver, British Columbia, Canada, a festival honoring standout works of computer animated storytelling.

August 7, 2022August 7, 2022 by Carolyn Collins Petersen

Dwarf Galaxies Found Without Influence From Dark Matter

Dwarf galaxy in Fornax. — The dwarf galaxy NGC1427A flies through the Fornax galaxy cluster and undergoes disturbances which would not be possible if this galaxy were surrounded by a heavy and extended dark matter halo, as required by standard cosmology. Courtesy ESO.

Ask astronomers about dark matter and one of the things they talk about is that this invisible, mysterious “stuff” permeates the universe. In particular, it exists in halos surrounding most galaxies. The mass of the halo exerts a strong gravitational influence on the galaxy itself, as well as on others in the neighborhood. That’s pretty much the standard view of dark matter and its influence on galaxies. However, there are problems with the idea of those halos. Apparently, some oddly shaped dwarf galaxies exist that look like they have no halos. How could this be? Do they represent an observationally induced challenge to the prevailing ideas about dark matter halos?

August 6, 2022August 6, 2022 by Anton Pozdnyakov

Interstellar Meteorite, Shortest Day Ever, Magnetosphere Collapse

An interstellar meteorite could be hiding in the ocean. Why doesn’t Jupiter have rings like Saturn. The time when Earth’s magnetic field almost collapsed. The shortest day on Earth, and Planet 9 is running out of places to hide. All this and more in this week’s episode of Space Bites.

August 6, 2022August 6, 2022 by Laurence Tognetti

Jupiter Missions Could Also Help Search for Dark Matter

In a recent study published in the Journal of High Energy Physics, two researchers from Brown University demonstrated how data from past missions to Jupiter can help scientists examine dark matter, one of the most mysterious phenomena in the universe. The reason past Jupiter missions were chosen is due to the extensive amount of data gathered about the largest planet in the solar system, most notably from the Galileo and Juno orbiters. The elusive nature and composition of dark matter continues to elude scientists, both figuratively and literally, because it does not emit any light. So why do scientists continue to study this mysterious—and completely invisible—phenomena?

August 5, 2022August 5, 2022 by Fraser Cain

I Asked an AI to Dream the Solar System as Food

Jupiter, as a Sandwich. Credit: Midjourney AI

As soon as I saw these new artificial intelligence image creation tools, like DALL-E, I wanted to see how well they’d work for generating space and astronomy images. I’m still on the waiting list for DALL-E 2, so I don’t have any feedback to give there, but I signed up for Midjourney AI, played around with the free account, and then signed up for a full paid account, so I could test out its capabilities.

August 5, 2022August 5, 2022 by Matt Williams

Masten Space is Building a Lunar Lander for NASA. Also, They Just Filed for Bankruptcy

Artist's rendering of the Masten XL-1 lander. Credit: Masten Space Systems

If you’re a fan of the commercial space industry (aka. NewSpace), then the name Masten Space Systems is sure to ring a bell. For years, this California-based aerospace company has been developing delivery systems to accommodate payloads to the Moon, Mars, and beyond. This included Xoie, the lander concept that won the $1 million Northrop Grumman Lunar X-Prize in 2009, their Xombie and Xodiac reusable terrestrial landers, and the in-Flight Alumina Spray Technique (FAST) that would allow lunar landers to create their own landing pads.

But perhaps their biggest feat was the Xelene Lunar Lander (XL-1) that they developed in partnership with the NASA Lunar CATALYST program. This lander was one of several robotic systems enlisted by NASA to deliver cargo to the Moon in support of the Artemis Program. This included the Masten-1 mission, which was scheduled to land a payload Moon’s southern polar region in 2023. The company was scheduled to make a second delivery (Masten-2) by 2024, one year before the first Artemis astronauts arrived. But according to a statement issued on July 28th, the company has filed for Chapter 11 and is bankrupt!

August 4, 2022August 4, 2022 by Laurence Tognetti

NASA’s Space Launch System Gets Tentative Launch Date of August 29th

NASA has announced tentative placeholder launch dates for its beast of a rocket, the Space Launch System (SLS), on its maiden flight to deep space. While work still needs to be accomplished to ensure its launch, the tentative dates are currently August 29^th, September 2^nd, and September 5^th. While NASA stressed these are not set dates, the announcement nonetheless puts SLS closer than ever to flight.

The maiden launch of the most powerful rocket ever built comes after years of budget increases and delays. Funding for SLS was approximately $1.5 billion in 2011 but has increased almost every year until it hit $2.5 billion in 2021. This came after Congress mandated SLS “operational capability…not later than December 31, 2016”, but has faced countless delays since then due to audits and poor management.

August 4, 2022August 4, 2022 by Matt Williams

Did you Want More Scientific Information About the First set of Images From JWST? Fill Your Boots

James Webb's first images! Credit: NASA/ESA/CSA/STScI

On July 12th, 2022, NASA and its partner agencies released the first James Webb Space Telescope (JWST) observations to the public. These included images and spectra obtained after Webb’s commissioning phase, which included the most-detailed views of galaxy clusters, gravitational lenses, nebulae, merging galaxies, and spectra from an exoplanet’s atmosphere. Less than a month after their release, a paper titled “The JWST Early Release Observations” has been made available that describes the observations and the scientific process that went into making them.