Two years ago, astrophysicists studying Type Ia supernovas discovered that our universe is a much stranger place than we had imagined, with invisible vacuum energy accelerating its expansion.Â (See my column about this in the May-1999 Analog.) However, new astrophysical observations from the BOOMERanG experiment (BalloonÂ Observations Of Millimetric Extragalactic Radiation and Geomagnetics), a balloon-borne cryogenic microwave telescope measurement that flew at an altitude ofÂ about 24 miles over the Antarctic, indicate that our universe is also rather ordinary, in that its space is maximally flat.Â The term Â“flatÂ” as used here means that the space of our universe is neither positively curved like a ball or negatively curved like a potato chip.Â It appears that in our universe, the tendencies of space toward positive curvature from gravitational attraction and towards negative curvature from expansion kinetic energy are precisely in balance, leaving space on the average completely free of curvature.
|Keywords||No keywords specified (fix it)|
|Categories||categorize this paper)|
References found in this work BETA
No references found.
Citations of this work BETA
No citations found.
Similar books and articles
Did the Big Bang Have a Cause?Quentin Smith - 1994 - British Journal for the Philosophy of Science 45 (2):649-668.
Theism, Atheism, and Big Bang Cosmology.William Lane Craig & Quentin Smith - 1993 - Oxford University Press.
Added to index2010-12-22
Total downloads8 ( #492,983 of 2,171,743 )
Recent downloads (6 months)1 ( #326,424 of 2,171,743 )
How can I increase my downloads?