Universe Today

February 23, 2024February 23, 2024 by Mark Thompson

Finally! Webb Finds a Neutron Star from Supernova 1987A

I can remember seeing images of SN1987A as it developed back in 1987. It was the explosion of a star, a supernova in the Large Magellanic Cloud. Over the decades that followed, it was closely monitored in particular the expanding debris cloud. Predictions suggested there may be a neutron star or even a black hole at the core but the resolution of the telescopes was insufficient to pick anything up. Now we have the James Webb Space Telescope and using its more powerful technology, signs of a neutron star have been detected.

February 23, 2024February 23, 2024 by Matt Williams

A Capsule With Antiviral Drugs Grown in Space Returns to Earth

The W-1 capsule landing at the Utah Test and Training Range. Credit: Vargas Space Industries

On Wednesday, February 21st, at 01:40 p.m. PST (04:40 p.m. EST), an interesting package returned to Earth from space. This was the capsule from the W-1 mission, an orbital platform manufactured by California-based Varda Space Industries, which landed at the Utah Test and Training Range (UTTR). Even more interesting was the payload, which consisted of antiviral drugs grown in the microgravity environment of Low Earth Orbit (LEO). The mission is part of the company’s goal to develop the infrastructure to make LEO more accessible to commercial industries.

February 23, 2024February 23, 2024 by Mark Thompson

The Sun Gets Feisty, Throwing Off Three X-Class Flares Within 24 Hours

Sunspot region 3590 which is located at a fairly high latitude produced two impulsive X-class events. The first solar flare peaked yesterday at 23:07 UTC with a maximum X-ray flux of X1.9 and the second solar flare peaked today at 06:32 with a maximum observed X-ray flux of X1.7. Both events caused a brief strong R3 radio blackout at the day-side of our planet.

The Sun is heading toward solar maximum (which is likely to be about a year away) and as it does, there will be more sunspots, solar flares and coronal mass ejections. Over the last 24 hours there has been three, yes three X-class flares, the first peaking at X1.9, the second 1.7 and the final one a mighty 6.3. Flares of this magnitude caused radio blackouts, disruption to mobile phones and radio transmissions.

February 23, 2024February 23, 2024 by Carolyn Collins Petersen

A Star Passed Through the Oort Cloud Less Than 500,000 Years Ago. It Wasn’t the Only One.

Stars travel throughout the Galaxy. It's inevitable that some will pass near the Sun and perhaps even through our Oort Cloud, with interesting consequences. Credit: NASA/ESA/STScI.

As stars in the Milky Way move through space, some of them have an unexpected effect on the Solar System. Over time, one comes closer to the Sun during its orbit in the galaxy. Some of them actually get within a light-year of our star and pass through the Oort Cloud. Such close flybys can affect the orbits of the outer planets and send cometary nuclei on a long inward rush to the Sun.

February 23, 2024February 23, 2024 by Evan Gough

A New Space Telescope will Map the Universe and Help Protect the Earth from Asteroids

This artist's illustration shows NASA's SPHEREx observatory in orbit. The mission will launch in 2025. Image Credit: By NASA/JPL - https://www.jpl.nasa.gov/missions/spherex, Public Domain, https://commons.wikimedia.org/w/index.php?curid=143819030

Can we secure our place in the Solar System? Not in any absolute sense because nature can be very unpredictable. But we can make the effort to safeguard our civilization by cataloguing potentially dangerous asteroids. An upcoming space telescope will help.

February 23, 2024February 23, 2024 by Mark Thompson

Finally! Blue Origin’s New Glenn Goes Vertical on the Launch Pad

If you think about space travel and the means of escaping the confines of the Earth then most people, currently, are likely to think about the new Artemis project and the Space Launch System. That’s not the only new development though, Blue Origin have been working on their New Glenn rocket and finally we have got a glimpse of their new offering. The rocket was finally rolled onto the launch pad at Cape Canaveral for testing to commence and we may even see a launch later this year.

February 22, 2024February 22, 2024 by Laurence Tognetti

Solar Physics: Why study it? What can it teach us about finding life beyond Earth?

Image of a coronal mass ejection being discharged from the Sun. (Credit: NASA/Goddard Space Flight Center/Solar Dynamics Observatory)

Universe Today has investigated the importance of studying impact craters, planetary surfaces, exoplanets, and astrobiology, and what these disciplines can teach both researchers and the public about finding life beyond Earth. Here, we will discuss the fascinating field of solar physics (also called heliophysics), including why scientists study it, the benefits and challenges of studying it, what it can teach us about finding life beyond Earth, and how upcoming students can pursue studying solar physics. So, why is it so important to study solar physics?

February 22, 2024February 22, 2024 by Scott Alan Johnston

If Hycean Worlds Really Exist, What are Their Oceans Like?

Artist's impression of possible hycean world K2-18 b. Credit: NASA, ESA, CSA, Joseph Olmsted (STScI)

Astronomers have been on the hunt for a new kind of exoplanet in recent years – one especially suited for habitability. They’re called hycean worlds, and they’re characterized by vast liquid water oceans and thick hydrogen-rich atmospheres. The name was coined in 2021 by Cambridge astronomer Nikku Madhusudhan, whose team got a close-up look at one possible hycean world, K2-18b, using the James Webb Space Telescope in 2023. In a newly accepted paper this January, Madhusudhan and coauthor Frances Rigby examined what the internal structure of hycean planets might look like, and what that means for the possibility of finding life within.

February 22, 2024February 23, 2024 by Alan Boyle

Intuitive Machines’ Odysseus Lander Sends Faint Signal From the Moon

Picture of lander with moon in background — A "selfie" captured before Odysseus' landing shows the lander with the lunar surface in the background. (Credit: Intuitive Machines via X / Twitter)

Intuitive Machines‘ Odysseus lander made space history today — becoming the first commercial spacecraft to survive a descent to the moon, and the first U.S.-built spacecraft to do so since the Apollo 17 mission in 1972. But it wasn’t a trouble-free landing.

Ground controllers had a hard time establishing contact with the robotic lander just after the scheduled touchdown time of 6:23 p.m. ET (2323 UTC). Several minutes passed, and then Intuitive Machines mission director Tim Crain reported that there was a faint signal coming from Odysseus’ high-gain antenna.

“We’re not dead yet,” he said.

February 22, 2024February 22, 2024 by Mark Thompson

Anti-Satellite Weapons Will Threaten Everyone’s Access to Space

Artist Impression of satellite in orbit above Earth

It’s a headline straight out of the movies yet the White House has recently confirmed it believes that Russia is building space-based anti-satellite weapon! There seems to be no conclusive evidence what this might be but one option may be a nuclear bomb that would indiscriminately wipe out satellites within a huge volume of space! Not only would it devastate satellites but would cause more problems down on the surface and create a whole load of space junk.