Universe Today

October 13, 2022October 13, 2022 by Nancy Atkinson

Mars Express Watched Deimos Pass in Front of Jupiter and its Moons

That’s no moon … wait … yes, it is, and more!

ESA’s Mars Express has captured an unusual and rare occultation, all from its vantage point in orbit of Mars. The spacecraft’s orbit brought it to the right place where it could witness the moment Mars’ small moon Deimos passed in front of Jupiter and its four largest moons. Scientists say that celestial alignments like these enable a more precise determination of the Martian moons’ orbits.

October 13, 2022October 13, 2022 by Nancy Atkinson

A new Launch Date for Artemis 1: November 14th … at Night

NASA’s Space Launch System (SLS) rocket with the Orion spacecraft aboard is seen at sunset atop the mobile launcher at Launch Pad 39B as preparations for launch continue, Wednesday, Aug. 31, 2022, at NASA’s Kennedy Space Center in Florida. Credit: (NASA/Joel Kowsky)

If the next launch attempt of the Artemis I mission goes as planned, it should be a spectacular sight.

NASA is now targeting Monday, November 14 at just after midnight Eastern Time for the liftoff of the Space Launch System (SLS) rocket carrying the Orion spacecraft. A 69-minute launch window opens at 12:07 a.m. EST.

October 13, 2022October 13, 2022 by Matt Williams

A Black Hole Burps out Material, Years After Feasting on a Star

. Credit: DESY/Science Communication Lab

Originally predicted by Einstein’s Theory of General Relativity, black holes are the most extreme object in the known Universe. These objects form when stars reach the end of their life cycle, blow off their outer layers, and are so gravitationally powerful that nothing (not even light) can escape their surfaces. They are also of interest because they allow astronomers to observe the laws of physics under the most extreme conditions. Periodically, these gravitational behemoths will devoir stars and other objects in their vicinity, releasing tremendous amounts of light and radiation.

In October 2018, astronomers witnessed one such event when observing a black hole in a galaxy located 665 million light-years from Earth. While astronomers have witnessed events like this before, another team from the Harvard & Smithsonian Center for Astrophysics noticed something unprecedented when they examined the same black hole three years later. As they explained in a recent study, the black hole was shining very brightly because it was ejecting (or “burping”) leftover material from the star at half the speed of light. Their findings could provide new clues about how black holes feed and grow over time.

October 13, 2022October 13, 2022 by Evan Gough

Webb Sees Organic Molecules in the Hearts of Galaxies, Surprisingly Close to Active Supermassive Black Holes

Artist view of an active supermassive black hole. Credit: ESO/L. Calçada

When the James Webb Space Telescope (JWST) launched, one of its jobs was studying galactic formation and evolution. When we look around the Universe, today’s galaxies take the shape of grand spirals like the Whirlpool galaxy and giant ellipticals like M60. But galaxies didn’t always look like this.

We don’t see these shapes when we look at the most distant and most ancient galaxies. Early galaxies are lumpy and misshapen and lack the structure of modern galaxies.

A new study based on JSWT observations looks at organic molecules near galactic centers. The researchers say observing these molecules can teach us a lot about galactic evolution.

October 13, 2022October 13, 2022 by Matt Williams

Starship and Super Heavy are Stacked up Again. How Long Until They fly?

The SN24 and BN7 prototypes fully stacked at the SpaceX Starbase. Credit: SpaceX

Things are heating up again at the SpaceX Starbase in Boca Chica, Texas! With so many static fire and flight tests now behind them and the FAA environmental assessment complete, space exploration enthusiasts have wondered when Elon Musk would attempt to conduct an orbital flight with the Starship prototype. As of Tuesday, October 11th, the Starship 24 (SN24) and Booster 7 (BN7) prototypes were once again seen fully stacked on the orbital launch pad, leading many to wonder if the long-awaited orbital flight is imminent!

October 12, 2022October 12, 2022 by Alan Boyle

America’s First Space Tourist Signs Up for Moon Trip on SpaceX’s Starship

Akiko and Dennis Tito — California investor Dennis Tito and his wife, Akiko Tito, plan to fly around the moon. (SpaceX Photo)

Twenty-one years after becoming the first paying passenger to visit the International Space Station, California financial analyst Dennis Tito and his wife, Akiko Tito, are taking on a new space adventure: a trip on SpaceX’s Starship super-rocket around the moon and back.

October 12, 2022October 12, 2022 by Matt Williams

SpinLaunch Completes its 10th Test, Hurling Payloads for NASA and Other Companies Into the air

SpinLaunch will send payloads to orbit using a centrifuge-launched vehicle. Credit: SpinLaunch

There has been no shortage of exciting developments in the commercial space industry (aka. NewSpace) in recent years. These include the ability to retrieve and reuse rockets (in part or whole), new configurations that reduce expendability, and new engines. But beyond making rocket launches more cost-effective, several cutting-edge ideas have been brought forward to make space more accessible. These include SpinLaunch‘s concept for an electric kinetic launch system (aka. a space catapult) that can propel payloads of up to 200 kg (440 lbs) to space.

On September 27th, 2022, SpinLaunch announced the results of its tenth successful flight test of its Suborbital Mass Accelerator (SMA) at Spaceport America, New Mexico. This time, SpinLaunch sent four partner payloads to space with its Suborbital Accelerator Flight Test Vehicle, which provided valuable data about the launch environment and payload integration process. This latest successful test has placed the company and its launch system one step closer to providing low-cost and sustainable launch services for satellites and other small payloads.

October 12, 2022October 12, 2022 by Evan Gough

The Moon Might be One Large Chunk that was Blasted Off the Earth Billions of Years Ago

A new study and supercomputer simulations present an alternative explanation for the Moon. Yes, it formed from an impact, but it may not have taken years. Image Credit: NASA Ames Research Center

Where did the Moon come from?

The widely-accepted view is that the Moon is a result of an ancient collision between the young Earth and a Mars-sized planet named Theia about 4.5 billion years ago. The impact melted Earth and Theia and sent molten material into orbit around Earth, where it formed a rotating torus of molten rock. That rock eventually coalesced into the Moon. It’s called the Giant Impact Hypothesis, and isotopic evidence from Apollo moon rocks illustrates the link between Earth and its Moon.

Case closed?

Not so fast. There’ve always been problems with this hypothesis. Can a new study answer them?

October 12, 2022October 13, 2022 by Nancy Atkinson

These Bizarre Concentric Rings in Space are Real, Not an Optical Illusion. New Data from JWST Explains What’s Happening

James Webb Space Telescope image of partial dust shells surrounding WR 140. Credit: JWST/MIRI/Judy Schmidt.

Back in August, an early release image from the James Webb Space Telescope revealed a bizarre sight: as many as 17 concentric rings encircling a binary star system, called Wolf-Rayet 140. Was it a spiral nebula, an alien megastructure or just an optical illusion?

Nope, I don't know what this is. Some kind of spiral nebula around WR140. I'm sure we'll find out more later.

h/t to @yuvharpaz & @JWSTPhotoBot pic.twitter.com/ukenoIXrnj
— Judy Schmidt (@SpaceGeck) August 29, 2022

The answer, revealed today, is dust. A new paper published in Nature Astronomy explains how stellar winds in this odd binary system blasts dust into near-perfect concentric circles every time the two stars come close to each other in their eccentric orbits.

October 12, 2022October 12, 2022 by Carolyn Collins Petersen

Satellite View of Stromboli’s New Eruption in Italy. You Can See a River of Lava Flowing to the Ocean

Mount Stromboli is one of the busiest volcanoes on the planet. It’s been erupting off and on for thousands of years, and almost continuously since the early 1930s. So, it’s no surprise that ESA’s orbiting Copernicus Sentinel-2 mission caught its latest eruption in the act. It used infrared-sensitive instruments to chart the flow and follow its course to the sea.