Space and astronomy news
The latest images from the Juno mission at Jupiter includes views of giant storms and vortexes on the gas giant world in amazing detail.
Continue reading “Just Look at the Jaw-Dropping Detail of These Storms on Jupiter”
Since the 1970s, scientists have known that within the cores of most massive galaxies in the Universe, there beats the heart of a Supermassive Black Hole (SMBH). The presence of these giant black holes causes these galaxies to be particularly energetic, to the point where their central regions outshine all the stars in their disks combined – aka. Active Galactic Nuclei (AGN). The Milky Way galaxy has its own SMBH, known as Sagittarius A*, which has a mass of over 4 million Suns.
For decades, scientists have studied these objects in the hopes of learning more about their role in galactic formation and evolution. However, current research has shown that SMBHs may not be restricted to massive galaxies. In fact, a team of astronomers from the University of Texas at Austin’s McDonald Observatory recently discovered a massive black hole at the heart of a dwarf galaxy that orbits the Milky Way (Leo I). This finding could redefine our understanding of how black holes and galaxies evolve together.
Continue reading “A Nearby Dwarf Galaxy has a Surprisingly Massive Black Hole in its Heart”
Some planets orbit their stars so closely that they have extremely high surface temperatures and extremely rapid orbits. Most of the ones astronomers have found are Hot Jupiters— planets in the size range of Jupiter and with similar compositions as Jupiter. Their size and proximity to their star make them easier to spot using the transit method.
But there’s another type of planet that also orbits very close to their stars and has extremely high surface temperatures. They’re small, rocky, and they orbit their star in less than 24 hours. They’re called ultra-short-period (USP) planets and TESS found one that orbits its star in only eight hours.
And the planet’s density is almost equivalent to pure iron.
Continue reading “TESS Finds a New Mars-Sized Planet (With the Density of Mercury)”
How do you power a super advanced alien civilization? Soak up a star. We harness the power of the Sun using solar panels. What if you were to scale this idea to astronomical proportions? Surround an entire star with solar collecting structures or satellites to power your sprawling alien galactic empire. Such massive structures are known as a “megastructures” – in this case a “Dyson Sphere.” We are already trying to detect possible megastructures in space using the dimming of a star and the glow of megastructure components in infrared light. But recent research provides a new detection method – a Dyson Sphere may cause its host star to swell and cool.
Japanese billionaire Yusaku Maezawa has begun his first space adventure — an 11-day visit to the International Space Station that could serve as the warmup for a round-the-moon trip to come.
Maezawa, production assistant Yozo Hirano and Russian cosmonaut Alexander Misurkin rode a Soyuz capsule into orbit from Russia’s Baikonur Cosmodrome in Kazakhstan, with launch coming at 0738 GMT December 8 (12:38 p.m. local time, 2:38 a.m. EST).
Hours later, the Soyuz docked with the station, and the trio floated inside to meet the orbital outpost’s seven other spacefliers. Maezawa was all smiles as he greeted family and friends back on Earth over a video link.
Before liftoff, the 46-year-old entrepreneur and art collector said he was looking forward to his journey.
“I feel excited like an elementary student waiting for a school trip,” he said at a news conference. “I want to see the Earth from space, float in zero gravity, and see how I will change through this experience. I was blessed with this opportunity, and I’m truly happy I can go.”
Continue reading “‘I’m Truly Happy’: Japanese Billionaire Yusaku Maezawa Floats Into Space Station”
Gamma rays are useful for more than just turning unassuming scientists into green-skinned behemoths. They can also shine a light on the deaths of some of the earliest stars in the universe. More accurately, they are some of the light caused by the deaths of the earliest stars in the universe. Now, a team of scientists led by Nicholas White of George Washington University, and formerly of NASA’s Goddard Space Flight Center, has proposed an observatory mission that would scan the sky for evidence of Gamma-ray bursts (GRBs) and use them to understand the early universe.
Continue reading “The Gamow Explorer Would be a new Gamma-ray Observatory to Search for the First Stars in the Universe… as They Explode”
Astronomers have a new tool to help them understand giant stars. It’s a detailed study of the precise temperatures and sizes of 191 giant stars. The authors of the work say that it’ll serve as a standard reference on giant stars for years to come.
It’ll also shed some light on what the Sun will go through late in its life.
Continue reading “Giant Stars and the Ultimate Fate of the Sun”
On December 2nd, 2021, the commercial space company Rocket Lab unveiled the detailed architecture of their Neutron rocket for the first time. In a live-streamed event, the company showcased all the new elements that will make this “megaconstellation” launcher a serious contender in the coming years. These include updated details about the rocket’s design, materials, propulsion, and reusability architecture.
Continue reading “Rocket Lab Shows off its new Reusable Neutron Rocket, due for Launch in 2024”
If NASA and other space agencies don’t want us to freak out about asteroids colliding with Earth, why do they give them names like Apophis? It sounds apocalyptic.
Apophis was the ancient Egyptian god of Chaos. He was an evil serpent that dwelled in endless darkness, the enemy of light and truth. So when they informed us that an asteroid named Apophis was due for a close encounter with Earth in 2029, people were understandably anxious. After all, Earth’s previous dominant inhabitants were evicted by an asteroid.
Continue reading “Asteroid Apophis’ 2029 Flyby Will Provide a Bonanza of Asteroid Science”
The nature of dark matter continues to perplex astronomers. As the search for dark matter particles continues to turn up nothing, it’s tempting to throw out the dark matter model altogether, but indirect evidence for the stuff continues to be strong. So what is it? One team has an idea, and they’ve published the results of their first search.
Continue reading “Maybe “Boson Clouds” Could Explain Dark Matter”