Today is the Highest Concentration of Atmospheric CO2 in Human History. 415 Parts Per Million. Last Time it Was This High, There Were Trees at the South Pole

Think about this for a minute: We humans and our emissions are helping turn back the climatological clock by 2 or 3 million years, possibly more. Not since that time, called the Pliocene Epoch, has the CO2 ppm risen above 400.

Way back then, the CO2 helped keep the Earth’s temperature 2 to 3 degrees C warmer than it is now. And the Earth was a much different place back then.

Continue reading “Today is the Highest Concentration of Atmospheric CO2 in Human History. 415 Parts Per Million. Last Time it Was This High, There Were Trees at the South Pole”

Before We Ruin the Universe, We Should Follow Some Space Sustainability Guidelines

There are over 20,000 objects in orbit around Earth that are larger than 10 cm. Image Credit: European Space Agency.
There are over 20,000 objects in orbit around Earth that are larger than 10 cm. Image Credit: European Space Agency.

There are 20,000 objects orbiting Earth at this moment that are larger than 10 cm. Out of that number, only about 2,000 are operational satellites. The other 18,000 objects are pieces of junk of varying sizes. But it’s not just junk: it’s dangerous junk.

If that doesn’t sound like a problem, keep this in mind: Thanks to SpaceX and others, we’re living in the age of cheap access to space, and we’re seeing more and more satellites boosted into orbit. The problem won’t go away on its own.

Continue reading “Before We Ruin the Universe, We Should Follow Some Space Sustainability Guidelines”

Blue Origin’s New Shepard Flies Again, a Week Before Their Mysterious Announcement

Today’s breed of billionaire space entrepreneurs likes to keep us guessing, don’t they? Mr. Elon Musk is famous for announcing partial plans on Twitter, then leaving us to cajole the details out of him. Now, Jim Bezos, Amazon founder and Blue Origin visionary, is making us guess what an upcoming mysterious announcement might mean, all on the tails of another successful flight for New Shepard.

Continue reading “Blue Origin’s New Shepard Flies Again, a Week Before Their Mysterious Announcement”

It Looks Like LIGO/Virgo Have Detected a Black Hole Eating a Neutron Star. For the First Time Ever

A new signal detected by LIGO/Virgo may be the so-called ‘holy grail’ of astrophysics: the merger of a neutron star and a black hole. They’ve discovered pairs of black holes merging, and pairs of neutron stars merging, but until now, not a neutron star-black hole pair.

Continue reading “It Looks Like LIGO/Virgo Have Detected a Black Hole Eating a Neutron Star. For the First Time Ever”

The World’s Biggest Aircraft – the Rocket-Launching Stratolaunch – Completes its First Test Flight

The inaugural flight of Stratolaunch's Roc air-launch system. Credit: stratolaunch.com

In 2011, Microsoft co-founder Paul G. Allen and Scaled Composites founder Burt Rutan announced the creation of Stratolaunch Systems. With the goal of reducing the associated costs of space launches, the company set out to create the world’s largest air-launch-to-orbit system. After many years, these efforts bore fruit with the unveiling of the massive Scaled Composites Model 351 Stratolaunch air carrier in the Summer of 2017.

Similar in principle to Virgin Galactic’s SpaceShipTwo, this behemoth is designed to deploy rockets from high altitudes so they can send payloads to Low-Earth Orbit (LEO). After multiple tests involving engine preburns and taxiing on the runway, the aircraft made its inaugural flight last weekend (Saturday, April 13th) and flew for two and half hours before safely landing again in the Mojave Desert.

Continue reading “The World’s Biggest Aircraft – the Rocket-Launching Stratolaunch – Completes its First Test Flight”

Despite the Crash, SpaceIL is Going Back to the Moon with Beresheet 2

Israel's Beresheet lunar lander took a selfie and an Earthie on its way to the Moon. Image Credit: Israel Space Agency, SpaceIL.
Israel's Beresheet lunar lander took a selfie and an Earthie on its way to the Moon. Image Credit: Israel Space Agency, SpaceIL.

Beresheet, the unlikely lander built with donations to a non-profit group, crashed into the Moon. But that doesn’t mean it wasn’t a historic accomplishment in its own way. Now SpaceIL, the non-profit behind Beresheet, wants to send another lander to the Moon.

Continue reading “Despite the Crash, SpaceIL is Going Back to the Moon with Beresheet 2”

Metal Asteroid Psyche Might Have Had Volcanoes of Molten Iron

An artist's illustration of a metallic asteroid like Psyche. Image Credit: Elena Hartley/USC
An artist's illustration of a metallic asteroid like Psyche. Credit: Elena Hartley/USC

Imagine a time in the Solar System’s past, when the asteroids were not solid rock, but blobs of molten iron. It sounds strange, but that may have been the case. And in the right conditions, some of those asteroids would have sprouted volcanoes. One of those asteroids, Psyche, is the destination for a NASA mission.

Continue reading “Metal Asteroid Psyche Might Have Had Volcanoes of Molten Iron”

Mars Helicopter Completes More Test Flights. It’s Almost Ready to go to Mars

Members of the NASA Mars Helicopter team inspect the flight model (the actual vehicle going to the Red Planet), inside the Space Simulator, a 25-foot-wide (7.62-meter-wide) vacuum chamber at NASA's Jet Propulsion Laboratory in Pasadena, California, on Feb. 1, 2019. Image Credit: NASA/JPL-Caltech
Members of the NASA Mars Helicopter team inspect the flight model (the actual vehicle going to the Red Planet), inside the Space Simulator, a 25-foot-wide (7.62-meter-wide) vacuum chamber at NASA's Jet Propulsion Laboratory in Pasadena, California, on Feb. 1, 2019. Image Credit: NASA/JPL-Caltech

We’ve known for some time that NASA is sending a helicopter to Mars. The vehicle, called the Mars Helicopter, is undergoing flight testing at NASA’s Jet Propulsion Laboratory in California. The little helicopter will make its eventual way to Mars as part of the Mars 2020 Rover mission.

The Mars Helicopter is pretty small, less than 1.8 kg (4 lb). It’s made of lightweight carbon fiber, and other materials like aluminum, silicon, and foil. The version being tested is the actual vehicle that will make the trip to Mars.

Continue reading “Mars Helicopter Completes More Test Flights. It’s Almost Ready to go to Mars”

SpaceX Releases a New Render of What the All-Steel Starship Will Look Like Returning to Earth

SpaceX's first detailed render of the Starship reentering Earth's atmosphere. Credit: SpaceX

The design for SpaceX’s Starship (aka. Big Falcon Rocket) is really starting to come together! Over the holidays, sections of the Starship Hopper (a miniature version of the Starship) were photographed being put together at the company’s South Texas Launch Site. By mid-January, the parts were fully-integrated, forming the body of the stainless-steel prototype that would test the spacecraft’s overall architecture.

What followed, earlier this month, were tests of the Starship’s hexagonal heat shields to determine if they would offer sufficient protection during re-entry. And now, in anticipation of the spacecraft’s eventual launch, SpaceX released an eye-popping new rendering of the Starship that shows what it would look like reentering Earth’s atmosphere.

Continue reading “SpaceX Releases a New Render of What the All-Steel Starship Will Look Like Returning to Earth”