Changes

=== Astronomy ===

=== Astronomy ===

# The [[moon]] is receding from the [[Earth]] at a rate<ref>[http://eclipse.gsfc.nasa.gov/SEhelp/ApolloLaser.html Measuring the Moon's Distance] ''Apollo Laser Ranging Experiments Yield Results'' by Fred Espenak, GSFC Planetary Systems Laboratory (LPI Bulletin, No. 72, August, 1994).</ref> that would have placed it too close to the Earth merely a billion years ago, causing instability in its orbit, tidal catastrophes on Earth, and other problems, such that neither Earth nor the moon would be as they are today.

# The [[moon]] is receding from the [[Earth]] at a rate<ref>[http://eclipse.gsfc.nasa.gov/SEhelp/ApolloLaser.html Measuring the Moon's Distance] ''Apollo Laser Ranging Experiments Yield Results'' by Fred Espenak, GSFC Planetary Systems Laboratory (LPI Bulletin, No. 72, August, 1994).</ref> that would have placed it too close to the Earth merely four billion years ago, causing instability in its orbit, tidal catastrophes on Earth, and other problems, causing Earth and the moon to be as they are today.

# [[Spiral galaxies]] appear to be young, and only implausible proposals of the existence of [[dark matter]] can reconcile the spirals with a belief in an old universe.

# [[Spiral galaxies]] appear to be young, and only implausible proposals of the existence of [[dark matter]] can reconcile the spirals with a belief in an old universe.

# The planetary orbits in the solar system - including Earth's - are unstable and unsustainable over the long periods claimed by Old Earth believers.<ref>[http://www.newsweek.com/id/201582 Newsweek: "An embarrassing little secret of astronomy ...."]. (Newsweek has inexplicably taken down its article, but it is quoted by Google and other links)</ref><ref>[http://www.nature.com/nature/journal/v459/n7248/full/nature08096.html Existence of collisional trajectories of Mercury, Mars and Venus with the Earth] by J. Laskar  &  M. Gastineau, ''Nature'' 459, 817-819 (11 June 2009).  Believers in an Old Earth speculate that the instability would not result in problems in a billion years, but other computer simulations could be developed to demonstrate multi-body instability for the solar system far more recent than that.</ref>

# The planetary orbits in the solar system - including Earth's - are unstable and unsustainable over the long periods claimed by Old Earth believers.<ref>[http://www.newsweek.com/id/201582 Newsweek: "An embarrassing little secret of astronomy ...."]. (Newsweek has inexplicably taken down its article, but it is quoted by Google and other links)</ref><ref>[http://www.nature.com/nature/journal/v459/n7248/full/nature08096.html Existence of collisional trajectories of Mercury, Mars and Venus with the Earth] by J. Laskar  &  M. Gastineau, ''Nature'' 459, 817-819 (11 June 2009).  Believers in an Old Earth speculate that the instability would not result in problems in a billion years, but other computer simulations could be developed to demonstrate multi-body instability for the solar system far more recent than that.</ref>