Hard Science Fiction by Brandon Q. Morris
Epsilon Indi C: a moon as massive as 70 Jupiters? Space

Epsilon Indi C: a moon as massive as 70 Jupiters?

The star Epsilon Indi is just barely visible with the naked eye in the southern sky. It is at a distance of 11.8 light-years from the Earth and has approximately the same size as the Sun but is somewhat older. It has also turned the usual classification of star, planet, and moon upside down. This is because what we see is only Epsilon Indi A, but the star is orbited by a brown dwarf with a mass of 75 Jupiters and this brown dwarf has, in turn, a companion with a mass of 70 Jupiters. (more…)
Can gravitational waves be used to transmit data? Space

Can gravitational waves be used to transmit data?

Albert Einstein predicted the existence of gravitational waves, but these rhythmic changes in the structure of space-time were not proven until 2016. Could it be possible to impress information on them – like with electromagnetic radiation – and to read this information back without distortion or loss of information? Yes, a team of Russian mathematicians has now shown. This is not obvious, because space-time, as a “medium,” appears to have special characteristics that are not handled by the theory of general relativity. The important question is thus: do these characteristics mean that transmitted data will always be distorted? (more…)
How do microquasars work? Space

How do microquasars work?

Quasars are active galactic nuclei. Markarian 231, for example, consists of a pair of ultra-massive black holes that have masses of 4 and 150 million solar masses, orbiting each other at an enormous speed at a distance of 600 million light-years from our Solar System and emitting electromagnetic radiation in the whole spectrum. The brightest objects in the universe are too far away to study them in high resolution. Therefore, astronomers were excited about the discovery of microquasars. What proper quasars present at the scale of whole galaxies, microquasars mimic at the scale of a solar system. (more…)
Bacteria survive one year on the outer shell of the ISS Life

Bacteria survive one year on the outer shell of the ISS

Bacteria of genus Deinococcus are known for their ability to survive even the harshest conditions. Deinococcus radiodurans, for example, is barely bothered by radiation. If a person receives a dose of 10 Gy, he will die within one to two weeks (as happened to the victims of atomic bombings). Deinococcus radiodurans, in contrast, will begin to gradually sicken starting at 10,000 Gy, but will then recover. At 17,500 Gy, a third of the population will still survive; individual specimens can survive doses of 30,000 Gy. The round cells of this genus, which are usually reddish due to pigment, have…
Superflare from red dwarf observed Proxima

Superflare from red dwarf observed

2MASS J02365171-5203036 is a rather inconspicuous red dwarf of spectral class M2. It travels through the universe approximately 123 light years from Earth and normally has a luminosity of approximately one-thousandth of that of our Sun’s. On 9 August 2017, however, it experienced an outburst that made it noticeable even in the Hubble Space Telescope’s data: it released energy of 1.3 * 1032 erg over a very short period of time – for comparison, a typical solar eruption measures approximately 1027 erg/s. That is a quantity that corresponds, for example, converted to food energy, to ten billion tons of…
Physicist describes a wormhole’s shape Space

Physicist describes a wormhole’s shape

Wormholes are shortcuts through space and time – and up to now purely a product of science fiction and theory. More precisely, their existence can only be deduced and calculated from current theories. Of course, this doesn’t mean that they actually exist. And it certainly doesn’t mean that they can be used to travel through space. But what would they look like and what shape would they have? This has been calculated by the Ukrainian physicist Roman Konoplya – or more precisely: he has shown how the shape of a wormhole can be calculated from its physical data. To…
Hyperion, a supercluster of galaxies in the early universe Space

Hyperion, a supercluster of galaxies in the early universe

The vast expanse of the universe has one advantage: because the light from the farthest reaches of the universe takes so long to get to us, astronomers can gain insight into its early history. Scientist’s latest discovery: galaxy superclusters apparently formed relatively early – as shown by one structure that scientists have named “Hyperion.” The gigantic proto-supercluster was identified by a team of astronomers led by Olga Cucciati from the Istituto Nazionale di Astrofisica (INAF) Bologna (Italian Institute of Astrophysics in Bologna) with the VIMOS instrument on the European Southern Observatory’s Very Large Telescope (VLT). Hyperion, observed approx. 2.3…
Four gas giants and a young sun Space

Four gas giants and a young sun

CI Tau, which is 450 light-years from Earth, is a T-Tauri star – these are stars that are still in their birth phase. Fusion has only recently ignited in its core, and the star is still contracting to its final size. Even though CI Tau is only approximately two million years old, it already has a companion: a “hot Jupiter” that has a mass of eight to ten Jupiters and is orbiting its host star at a close distance. It was previously thought that at least ten million years were needed to form these conditions. That’s why scientists were…