Want to go to Mars? Great! Now, all you need to do is plan a mission. Figure out where to land, what to bring, and how you’re going to live there in the months (or years) between favorable return windows. All this will be determined by the availability of crucial resources you’ll need to survive.
Continue reading “Where are the Best Places to Land Humans on Mars?”ESA’s Upcoming Mission Will Tell us if Venus is Still Volcanically Active
![Venus Envision mission](https://www.universetoday.com/wp-content/uploads/2022/12/EnVision-e1670965263930.jpg)
When it comes to planetary exploration, particularly of Venus, a big part of the story is under the surface. It’s a story that ESA’s EnVision mission was selected to tell when it gets to the planet in the 2030s. That’s because the spacecraft will include a subsurface radar sounder (SRS) to “peek under the surface” of Venus.
Continue reading “ESA’s Upcoming Mission Will Tell us if Venus is Still Volcanically Active”Black Holes Shouldn’t be Able to Merge, but Dozens of Mergers Have Been Detected. How Do They Do It?
![black holes in a globular cluster](https://www.universetoday.com/wp-content/uploads/2022/12/heic2103c-e1670872010126.jpg)
Who knows what lurks in the hearts of some globular clusters? Astronomers using a collection of gravitational wave observatories found evidence of collections of smaller black holes dancing together as binaries in the hearts of globulars. What’s more, they’ve detected an increased number of gravitational wave events when some of these stellar-mass black holes crashed together.
Continue reading “Black Holes Shouldn’t be Able to Merge, but Dozens of Mergers Have Been Detected. How Do They Do It?”Comets Leave Dusty Trails That Surround the Solar System
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Comets are messy things. They scatter bits of dust as they travel through the solar system. If Earth happens to encounter one of those cometary dust trails, we get to see a meteor shower.
Continue reading “Comets Leave Dusty Trails That Surround the Solar System”Evidence of a Megatsunami on Mars
![Mars panorama](https://www.universetoday.com/wp-content/uploads/2022/12/1920px-Mars_Viking_12a002.jpg)
Things were pretty wet back on Mars about three and a half billion years ago. You wouldn’t know that by looking at the planet today. But, would you believe a megatsunami happened there? It turns out that not one, but two of these rogue waves happened there some 3.4 billion years ago.
Continue reading “Evidence of a Megatsunami on Mars”Ground Telescopes can Adapt to Satellite Megaconstellations if They get Accurate Telemetry Data
![starlink satellite streaks](https://www.universetoday.com/wp-content/uploads/2020/02/ann19035a-e1670278589516.jpg)
The growing population of communication satellites such as Starlink and OneWeb is posing challenges for Earth-based astronomy facilities. Since such constellations will not be going away soon, astronomers want to find ways to work around the issue.
It’s not going to be easy, considering that thousands and thousands of low-Earth satellites (LEOsats) could potentially be placed in low-Earth orbit in the next few years. So, what are the solutions?
Continue reading “Ground Telescopes can Adapt to Satellite Megaconstellations if They get Accurate Telemetry Data”With a Small Network of Satellites Around Mars, Rovers Could Navigate Autonomously
![small satellites at Mars](https://www.universetoday.com/wp-content/uploads/2022/11/martianConstellation-e1669851388916.jpg)
When it comes to “on the ground” exploration of Mars, rovers make pretty good advance scouts. From Pathfinder to Perseverance, we’ve watched as these semi-autonomous robots do what human explorers want to do in the future. Now, engineers are studying ways to expand rover exploration on Mars. One thing they’re thinking about: communication satellite constellations for Mars surface navigation.
Continue reading “With a Small Network of Satellites Around Mars, Rovers Could Navigate Autonomously”Mauna Loa is Erupting for the First Time in 40 Years. Here’s What it Looks Like From Space.
A sleeping giant of a volcano woke up this past week on the Big Island of Hawaii. Mauna Loa, which last erupted in the early 1980s, has been rattling the island with earthquakes for weeks. Finally, on November 27th, the mountain opened up. Not only did residents see this eruption, but NASA and NOAA satellites captured an infrared view of it.
Continue reading “Mauna Loa is Erupting for the First Time in 40 Years. Here’s What it Looks Like From Space.”BlueWalker 3 is a Cellphone Tower in Space and One of the Brightest Objects Ever Launched. Astronomers Aren’t Happy.
![BlueWalker 3](https://www.universetoday.com/wp-content/uploads/2022/11/iau2211b-e1669749244825.jpg)
It seems our nighttime skies are hosting another new communications network. In recent years, we’ve seen Starlink trains of satellites moving against the backdrop of stars, and more OneWeb satellites will soon be heading to orbit. Now, it’s BlueWalker 3, a prototype test satellite for a new communications constellation aimed at cell phones. Think of it as the first of many “cell towers in space” providing communications access for people around the globe.
Continue reading “BlueWalker 3 is a Cellphone Tower in Space and One of the Brightest Objects Ever Launched. Astronomers Aren’t Happy.”The Second-Closest Supermassive Black Hole Might be in a Nearby Dwarf Galaxy
![Leo 1 dwarf spheroidal galaxy has a supermassive black hole](https://www.universetoday.com/wp-content/uploads/2021/12/Ugc5470.jpg)
There’s a little galaxy in the Milky Way’s cosmic neighborhood called Leo 1. It’s a dwarf spheroidal that lies less than a million light-years away from us. Surprisingly, it has a supermassive black hole about the same mass as Sagittarius A* in our galaxy. That’s unusual in several ways, and astronomers want to know more about it.
Continue reading “The Second-Closest Supermassive Black Hole Might be in a Nearby Dwarf Galaxy”