Right now, somewhere above our heads, missions are being planned that could redefine humanity's place in space. The decisions ...

More than 400 stocks touched their 52-week lows, including Adani Enterprises, Adani Total Gas, Syngene International, ...

Brex’s $5.15 billion agreement to sell to Capital One isn’t the kind of exit employees or investors would have dreamed of ...

Despite their sturdy provenance in the earth's mantle, great sapphires are a fragile commodity. Here, Sri Lanka's newest ...

The Star of Pure Land, a GIA-certified natural purple star sapphire and the world’s largest documented specimen of its kind, ...

Certified by the Gemological Institute of America, the sapphire has been identified as a unique specimen originating from Sri Lanka, historically known in gemology as Ceylon.

One of the biggest discoveries made in the world of gems has come to light in Sri Lanka, and it is known by the name of ‘Star ...

A STUNNING purple gem potentially worth nearly £300 million has been found in Sri Lanka. The ‘Purple Star Sapphire’ weighs an ...

The Star of Pure Land, a GIA-certified natural purple star sapphire and the world’s largest documented specimen of its kind, was formally introduced into the global scientific and cultural record ...

The Star of Pure Land, a 3,536-carat natural purple star sapphire and the world’s largest documented specimen of its kind was officially unveiled in Colombo, with GIA certification confirming its ...

Abstract: A safe time-varying formation (TVF) control framework is proposed in this article for heterogeneous multiagent systems under the constraints of denial of service (DoS) attacks, ...

Abstract: Current formations commonly rely on invariant hierarchical structures, such as predetermined leaders or enumerated formation shapes. These structures could be unidirectional and sluggish, ...