The nearest star capable of exploding into a supernova in the next million years is Betelgeuse, some 200 parsecs
(652 light years) from Earth.
A (Everything I Do) I Do It for You B Bohemian Rhapsody C Love Me Tender D Rose Marie QUESTION 15 - for 15 points: What is measured in parsecs
? A Time B Speed C Distance D Pressure
The relationship between absolute (M) and apparent (m) magnitude depends on the distance (d, in parsecs
):for M = -7.5, m = +3.7: d = 1738 parsecs
14 A stellar cruiser, blinking into real space five parsecs
from earth, in the neighbourhood of the constellation Indus, picked up a message beamed from the fourth planet of the F-type star Ra.
Other topics include relativistic winds from supermassive black holes, gas kinematics in the inner few hundred parsecs
of NGC 1068, and the effects of an accretion disk wind on the profile of AGN emission lines.
El nuevo planeta, al que sus descubridores han denominado Alpha Centauri Bb --con una notable falta de sentido poetico--, se encuentra a solo 1,3 parsecs
, es decir, a 4,28 anos-luz de la Tierra.
It features a snippet from A New Hope where Han Solo tells Luke Skywalker and Obi-Wan Kenobi that his Millennium Falcon "made the Kessel run in less than 12 parsecs
It is located about 500 parsecs
from us and is less than a million years old.
This ruler has allowed the researchers to measure the distance back to an epoch when the universe was 63 percent of its current size, at 2,094 million parsecs
plus or minus 34 million parsecs
, a precision of 1.7 percent.
The absolute magnitude is defined as the apparent magnitude measured at 10 parsecs
from the source.
"We have rebuilt in four years more than 3,000 parsecs
of our roads.
This is a distance of 10 parsecs
, which is 10 times the distance at which an object would subtend an angle of parallax of 1 second of arc as the Earth rotates around our Sun.
Scientists had suspected since the early 1990s that the well-known AB Dor A--a star 48 light-years (14.9 parsecs
) from Earth and only 50,000,000 years old--has a low-mass companion because its position "wobbles" as it is pulled by an unseen (but nearby) mass.
For instance, post-Copernicus, a little Jobian self-abasement when confronted with parsecs
, galaxy clusters, and light-years;  or perhaps some ecstatic unio mystica at our new-found Darwinian oneness with the natural world.
The distance chosen was 10 parsecs
, or 32.6 light-years.