naked-eye

Chi, alongside the neck, pulsates between naked-eye and dim telescopic brightness roughly mag 5 to 13 every 13 months or so.

Starwatch: The summer triangle 2011

The other naked-eye planets are about to participate in their most compact grouping for years, though the event will go largely unobserved from Britain.

Starwatch: The May night sky 2011

After the initial naked-eye assessment, Mr. Risser began drawing on different imaging methods to analyze the piece.

Apollo Deconstructed Arnie Cooper 2011

Brightening from mag 0.5 to -0.4, it should become a naked-eye object and an easy binocular one if our horizon is clear.

Starwatch: Mercury in view 2011

Our Milky Way "owns" 160 known globulars, of which the two brightest are naked-eye objects in the southern hemisphere.

Starwatch: Globular clusters 2011

His revolutionary model was based on complex mathematical calculations and naked-eye observations of the heavens; the telescope had not yet been invented.

SCIENCE NEWS 2010

The great planet that they crawled up on, till it showed a visible naked-eye disc, was larger than Jupiter, a companion to the star, somewhat younger and larger the the Sun, around which it swung at a lordly distance.

Destiny Narrowly Avoided 2010

It is hard to be excited about the other naked-eye planets this month.

Jupiter at opposition in September night sky 2010

Mr. Horkheimer, who died Friday at 72, was as celestial guide at Miami's Space Transit Planetarium since the 1960s, and in 1976 started his weekly five-minute PBS show, billed as the only national program devoted to naked-eye astronomy.

'Star Gazer' Popularized the Night Sky 2010

In my opinion, the 1806 Pointed 6 is a scarce and undervalued issue with enough of a naked-eye “coolness factor” that it should sell for at least a 15-20% premium over a common date.

Ten Underappreciated Early United States Gold Coins : Coin Collecting News 2009