The massive star Eta Carinae has been observed in the infrared for over forty years. Between 1976 and 1998, astronomers saw a linear increase in the star’s brightness. But Eta Carinae has been steadily heating up ever since a close approach with its companion star in 1998, and astronomers want to know why.
The undergrad research posts continue! This month’s post discusses two types of clusters: clusters of galaxies, and open clusters of stars in our own galaxy.
The undergrad research posts continue! This month’s post discusses the orientation of galaxies in the Universe.
What if type Ia supernova are not all made the same way? For the first time, a study links type Ia supernova explosions to their parent systems, uncovering evidence for two different ways to produce these purportedly “standard” explosions.
If you would like to live in a less-polluted world, you might want to consider moving to Wasp-19b. Its lack of a temperature inversion helps it keep clear skies.
This paper presents the first evidence of two distinct populations of pulsars, which the authors speculate stem from a difference in how they are formed.
Today, most observational astronomy is done by large teams. But there are large teams, and then there are large teams — the paper I’m discussing today builds on the work of 250,000 members of the public who participated in the Galaxy Zoo galaxy classification project.
In this paper, techniques from helioseismology – using waves to learn about the interior of the Sun – are applied to yet another object: Jupiter. Because Jupiter is largely a fluid, like the Sun, astronomers have expected it to show global seismic behavior since the mid-1970s; the signal was even theorized to be about the same magnitude as solar oscillations. However, attempts to detect Jupiter’s global oscillations in the 80s and 90s were largely unsuccessful.
If you’ve ever given a speech or played sports inside of a cavernous gymnasium, you are well familiar with how sound can reflect off of the walls and cause an echo. Interestingly, this phenomenon also occurs on cosmic scale–not just with pressure waves like sound (or shocks), but with light.