Hubble Bubble

Not to be confused with Canadian Gum Hubba-Bubba, Hubble has released a great birthday image for it’s 26th birthday.  I’m a few days late to celebrate, but it’s still a beautiful image. Known as NGC 7653, the Bubble nebula is 8,000 light years distant in the constellation of Cassiopeia.  The reason for this natural bubble […]

Dark Matter is Complicated

The fact that we have found gravitational waves tells us that we have come a long way in terms of science and technology.  We detected a perturbation in the fabric of space-time that was one one-thousandth the diameter of a proton.  It’s insane to think about that level of precision.  And yet we still can’t […]

Space Mice With Liver Disease

Mice are a common laboratory animal for pre-human testing.  Everything from drugs to medical treatments to surgeries have been tested on mice, and the effects of spaceflight are no exception.  Animals such as Laika the dog and Rhesus monkey Albert 1 have had their own test flights, but mice offer an easy alternative when there’s […]

The Nearby Supernova Revealed

Remember last week when I was talking about the evidence for some ancient-but-astronomically-recent supernovae? It turns out there is other evidence! Evidence that has helped scientists narrow down the potential source locations. Data from the Cosmic Ray Isotope Spectrometer (CRIS), an instrument aboard NASA’s Advanced Composition Explorer (ACE) spacecraft, has helped us figure out where […]

A Ring of Fire

A direct consequence of Einstein’s theory of general relativity, and an observational way to prove it, is gravitational lensing.  It requires a powerful gravitational source to work, such as a galaxy or cluster of galaxies.  It works in a similar way to a lens of glass, where rays of light are bent toward a single […]

Multiple Ancient Supernovae

If a supernova were to go off somewhere in our galaxy, the minimum safe distance for Earthbound life would be about 50 light years.  Any closer than that, and we would experience an intense blast of high energy radiation and an eventual shower of radioactive particles.  It would be like nuclear bombs were set off all […]

Mercury Surprises

One of the most fascinating things happens whenever I show someone the planet Mercury in the sky. Their first reaction is to be surprised at how bright it is.  Most people think of Mercury as a faraway planet, too close to the Sun to see at all. But in reality, Mercury is close to Earth, and when […]

Space Travel HERTS

In the post-Voyager era of deep space flight, spacecraft propulsion designs feel like science fiction.  Instead of using rockets and a thermonuclear generator to produce heat, we have things like solar sails, laser sails, and ion propulsion.  These all take advantage of the vastness of space to create a slow-but-continuous acceleration that can get spacecraft […]

Building the Supermassive

Black holes form when a massive star runs out of fuel.  Gravity causes the core to collapse down to an object so dense that light itself can not escape.  In the Milky Way galaxy, there are expected to be over 100 Million black holes, though of course we can’t see them.  The one we can […]