Sentences with phrase «shown dramatic variations»

Already, it has clearly shown dramatic variations in the thickness of the layers along the cliffsides.

«Usually distant galaxies do not change significantly over an astronomer's lifetime, i.e. on a timescale of years or decades,» explains Andrea Merloni, «but this one showed a dramatic variation of its spectrum, as if the central black hole had switched on and off.»

Not exact matches

The various works show slight variations in form as well as the dramatic differences in scale.

The new study tracks the correlation of carbon isotope variation and volcanic eruptions from the 19th century until recent years, and shows the dramatic reduction in available sunlight in 536 as well as between 541 and 544 CE.