Opportunity

NASA hasn't heard from Opportunity since June 10.

The planet-wide dust storm on Mars is weakening, however.

Melting Permafrost

A NASA study argues that as permafrost melts it will release underground carbon and methane-- greenhouse gases-- into the atmosphere, thus accelerating climate change.

The process could take mere decades.

Minimoons

Earth's gravity temporarily captures many tiny asteroids.  They are called minimoons.

They could provide relatively easy asteroid sampling opportunities.

Perspective

Walmart has announced quarterly revenues of $128 billion.

That's more than six times NASA's annual budget.

WOW

On this day in 1977, astronomers at Ohio State detected the WOW! signal.

To date, the signal remains unexplained in natural terms.

STAR TREK

A new STAR TREK project is in the works.

Patrick Stewart will again star as Jean-Luc Picard.

Success

NASA successively launched its Parker Solar Probe Sunday.

Parker is a seven year mission to study the Sun.