Space and astronomy news
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?”
In case you missed any of the 25-day flight of Artemis 1, NASA has compiled a 25-minute highlight reel that showcases the top moments of the mission, from launch to splashdown.
Continue reading “Watch a NASA Supercut of the Entire Artemis I Mission, From Launch to Landing”
To stand on a coastal shore and watch how eagles, ravens, seagulls, and crows take flight in high winds. it’s an inspiring sight, to be sure. Additionally, it illustrates an important concept in aerial mechanics, like how the proper angling of wings can allow birds to exploit differences in wind speed to hover in mid-air. Similarly, birds can use these same differences in wind speed to gain bursts of velocity to soar and dive. These same lessons can be applied to space, where spacecraft could perform special maneuvers to pick up bursts of speed from “space weather” (solar wind).
This was the subject of a recent study led by researchers from McGill University in Montreal, Quebec. By circling between regions of the heliosphere with different wind speeds, they state, a spacecraft would be capable of “dynamic soaring” the same way avian species are. Such a spacecraft would not require propellant (which makes up the biggest mass fraction of conventional missions) and would need only a minimal power supply. Their proposal is one of many concepts for low-mass, low-cost missions that could become interplanetary (or interstellar) explorers.
Continue reading “Birds use Dynamic Soaring to Pick Up Velocity. We Could Use a Similar Trick to Go Interstellar”
Normally, it would be a very bad day if your space station habitat module blew up. But it was all smiles and high-fives in mission control when Sierra Space’s LIFE habitat was intentionally over-inflated until it popped spectacularly in an Ultimate Burst Pressure (UBP) test. This video shows the moment of boom from several different viewpoints.
Continue reading “Sierra Space Inflated a Habitat to Destruction, Testing its Limits Before Going to Orbit”
The stars call to us, as Carl Sagan once said. Given the human drive to explore our world and expand our reach, it is likely only a matter of time before we begin to build our homes in the solar system. The Moon and Mars could be acceptable destinations, but nearby asteroids could also become homes, as a recent study shows.
Continue reading “Rubble Pile Asteroids Might be the Best Places to Build Space Habitats”
Our understanding of habitability relies entirely on the availability of liquid water. All life on Earth needs it, and there’s every indication that life elsewhere needs it, too.
Can planets with frozen surfaces somehow have enough water to sustain life?
Continue reading “Could Life Survive on Frigid Exo-Earths? Maybe Under Ice Sheets”
For years, we’ve seen images from various Mars rovers and landers of dust devils churning across the dusty landscape of the Red Planet. But now, thanks to a microphone on the Perseverance rover and a whirling dust storm that passed directly over the rover, we know what a dust devil on Mars sounds like, too.
Continue reading “Perseverance Heard a Dust Devil on Mars, and Now You Can Too”
The Oort Cloud is a collection of icy objects in the furthest reaches of the Solar System. It contains the most distant objects in the Solar System, and instead of orbiting on a plane like the planets or forming a ring like the Kuiper Belt, it’s a vast spherical cloud centred on the Sun. It’s where comets originate, and beyond it is interstellar space.
At least that’s what scientists think; nobody’s ever seen it.
Continue reading “The Oort Cloud Could Have More Rock Than Previously Believed”
Two thousand five hundred years ago, during the height of the bronze age, an old red star died. Its outer layers expanded over time, becoming what is now known as the Southern Ring Nebula, or less romantically, NGC 3132. By the looks of it, this planetary nebula looks like many others. As Sun-like stars die, they swell to become red giants before becoming a white dwarf, and their outer layers typically become a planetary nebula. But a recent study finds that this particular nebula formed in a way quite messier than we had thought.
Continue reading “The Formation of the Southern Ring Nebula was Messier Than the Death of a Single Star”
As far as we know, nobody lives in our neighbour, the Small Magellanic Cloud (SMC.) So it’s okay to point our telescope there and gaze at it.
Continue reading “Hubble Sees a Glittering Jewel in the Small Magellanic Cloud. But the Jewel is Disappearing”